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- IC200MDL930
- VersaMax Relay Output Module
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- 110 x 66.8 x 50 mm
- 0.24 kg
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Product Overview
The GE IC200MDL930 VersaMax Relay Output Module is a modular output component designed for industrial automation systems using the GE VersaMax platform. Unlike a conventional solid-state digital output, a relay output module uses relay contacts to provide electrical switching between the control system and connected field circuits.
The IC200MDL930 can therefore serve as an interface between PLC logic and suitable external loads such as control relays, contactors, solenoid interfaces, indicators, alarms, and other discrete control devices. Its relay-based output architecture can be useful when the field circuit requires contact switching or when the application involves different types of discrete loads.
In a typical VersaMax control system, the PLC program determines when an output should be activated. The controller communicates the command through the I/O architecture, and the IC200MDL930 changes the state of the corresponding relay output. The relay contacts then provide the switching interface to the external circuit.
The supplied product information is:
- Manufacturer: GE
- Product Family: VersaMax
- Model: IC200MDL930
- Product Type: VersaMax Relay Output Module
- Dimensions: 110 × 66.8 × 50 mm
- Weight: 0.24 kg
- Application: Industrial Automation
- Primary Function: Relay-Based Discrete Output Control
The exact number of relay channels, contact arrangement, permissible voltage, current rating, switching capacity, isolation characteristics, terminal assignment, and load limitations should be confirmed against the applicable system documentation before wiring or commissioning.
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | GE |
| Product Family | VersaMax |
| Model | IC200MDL930 |
| Product Type | VersaMax Relay Output Module |
| Signal Type | Relay / Discrete Output |
| Main Function | Switching External Field Circuits |
| System Architecture | Modular I/O |
| Application | Industrial Automation |
| Dimensions | 110 × 66.8 × 50 mm |
| Weight | 0.24 kg |
| Installation | VersaMax Modular I/O System |
| Interface | VersaMax I/O Backplane |
| Output Technology | Electromechanical Relay |
| Field Interface | Relay Contacts |
| Typical Applications | Relays, Contactors, Solenoid Interfaces, Indicators, Alarms |
Function and Working Principle
The IC200MDL930 provides relay-based discrete outputs between the VersaMax controller and external field equipment.
A simplified signal path is:
PLC Program
↓
VersaMax Controller
↓
I/O Backplane
↓
IC200MDL930
↓
Relay Contact
↓
Field Wiring
↓
External Load
When the PLC program determines that a particular output must be activated, the controller sends the corresponding output command to the I/O module.
The appropriate relay channel changes state. The relay contacts then switch the associated external circuit.
When the command is removed, the relay returns to its inactive state according to the characteristics of the module and the control system.
This relay-based architecture makes the module different from a transistor- or semiconductor-based output. The field circuit is switched through relay contacts rather than relying exclusively on a semiconductor output device.
Why Relay Outputs Are Useful in Industrial Automation
Relay outputs are commonly selected when the control application requires an electrically isolated switching interface or when the external circuit is better suited to contact-based switching.
Potential benefits include:
- Flexible field-device interfacing
- Electrical separation between control and field circuits
- Compatibility with suitable AC or DC control circuits
- Ability to switch discrete control loads
- Straightforward integration with conventional relay logic
- Convenient interfacing with contactors and control relays
However, relay outputs also have mechanical contacts, which means contact wear, switching frequency, load type, and inrush current must be considered during system design.
Role in Industrial Control Systems
A typical control architecture can be represented as:
Field Sensors
↓
Input Modules
↓
VersaMax Controller
↓
PLC Application Program
↓
IC200MDL930
↓
Relay Contacts
↓
Field Devices
↓
Industrial Process
The IC200MDL930 operates at the output interface layer.
It can be used for functions such as:
- Motor starter commands
- Contactor control
- Valve-control interfaces
- Alarm activation
- Indicator control
- Auxiliary relay control
- Machine sequencing
- Equipment enable signals
- Interlock-related commands
- Process-control outputs
Typical Industrial Applications
Machine Automation
The IC200MDL930 can be used to provide relay-based control signals for automated machinery.
Potential applications include:
- Control relays
- Contactors
- Solenoid interfaces
- Indicator devices
- Machine alarms
- Auxiliary actuators
- Equipment enable circuits
For example, a PLC may determine that a machine sequence has reached a specific stage and activate a relay output. The relay contact can then energize an external control circuit.
Conveyor Systems
Conveyor equipment often uses discrete commands for:
- Motor starter interfaces
- Conveyor enable signals
- Diverter mechanisms
- Pneumatic valves
- Alarm devices
- Stack lights
- Auxiliary equipment
The IC200MDL930 can provide relay contacts for suitable external circuits.
Packaging Machinery
Packaging machines frequently require numerous discrete outputs.
Potential applications include:
- Clamping mechanisms
- Solenoid interfaces
- Auxiliary relays
- Machine alarms
- Product diverters
- Equipment enable circuits
- Sequence-control functions
Relay outputs can be useful where the field equipment already uses conventional relay-based control circuits.
Pump and Fan Control
The module may be used as part of control interfaces for:
- Pump starters
- Fan starters
- Auxiliary contactors
- Equipment enable circuits
- Alarm circuits
- Control relays
For larger motors, the relay output should generally operate an appropriately rated external starter, contactor, or interface device rather than directly switching a motor load beyond the module’s specified switching capability.
Process Automation
In process-control applications, relay outputs may be used for:
- Valve-control interfaces
- Pump enable commands
- Equipment permissives
- Alarm outputs
- Auxiliary relay circuits
- Process sequence control
Installation Guide
1. Verify Product Identification
Before installation, confirm that the module is:
GE IC200MDL930 VersaMax Relay Output Module
Inspect the module carefully.
Check for:
- Cracked housing
- Broken mounting features
- Damaged connectors
- Bent or contaminated contacts
- Signs of overheating
- Physical deformation
- Corrosion
- Damaged terminal interfaces
Do not install a module with visible mechanical or electrical damage.
2. Inspect the VersaMax Carrier
The carrier provides the mechanical and electrical connection between the module and the VersaMax I/O architecture.
Before installation, inspect:
- Carrier condition
- Backplane connector
- Module position
- Adjacent modules
- Terminal assembly
- Field wiring
- Power connections
A defective carrier can create symptoms that are incorrectly diagnosed as an IC200MDL930 failure.
3. Check the Installation Environment
Before mounting the module, verify that the control cabinet provides a suitable environment.
Consider:
- Ambient temperature
- Humidity
- Dust
- Vibration
- Electrical noise
- Cabinet ventilation
- Clearance around equipment
- Accessibility for maintenance
Avoid installing the module where excessive heat, moisture, contamination, or mechanical vibration could affect long-term reliability.
4. Follow Electrical Safety Procedures
Follow the facility’s approved electrical isolation procedure before installation or replacement.
Unless the particular VersaMax installation is specifically designed for live module replacement, disconnect power before servicing.
The controlled machine or process should be placed into a safe state before work begins.
5. Install the Module
Align the IC200MDL930 with the assigned carrier position.
Carefully engage the module with the carrier.
Verify:
- Correct orientation
- Proper connector alignment
- Complete seating
- Secure mechanical locking
Do not use excessive force.
If the module cannot be seated correctly, inspect the module connector and carrier before continuing.
6. Connect Relay Output Wiring
Connect the field wiring according to the approved electrical drawings.
Potential external circuits may include:
- Control relays
- Contactors
- Solenoid circuits
- Indicator circuits
- Alarm circuits
- Auxiliary control circuits
Pay close attention to relay contact identification and the required external power source.
7. Verify Load Compatibility
Relay contacts have electrical switching limitations.
Before commissioning, verify:
- Load voltage
- Load current
- Inrush current
- AC or DC characteristics
- Resistive or inductive load
- Switching frequency
- Required suppression
- External protection
A load that appears acceptable based only on its normal current may still create excessive stress during startup or switching.
8. Verify Field Wiring
Inspect:
- Terminal connections
- Contact wiring
- Common circuits
- Field power
- Load conductors
- Cable insulation
- Protective devices
Incorrect wiring can cause outputs to remain inactive, unexpectedly energize equipment, or create short-circuit conditions.
Commissioning Procedure
Step 1 — Mechanical Inspection
Verify that the IC200MDL930 is correctly installed and securely seated.
Step 2 — Wiring Verification
Compare the installed wiring with the approved electrical drawings.
Step 3 — Contact Verification
Confirm that each relay output is connected to the intended external circuit.
Step 4 — Field Power Verification
Check the external supply associated with the field circuits.
Step 5 — Controller Startup
Energize the system according to the approved startup procedure.
Step 6 — Module Recognition
Confirm that the VersaMax control system recognizes the installed I/O configuration correctly.
Step 7 — Individual Output Test
Test each required relay output independently.
Step 8 — Load Response Test
Verify that the corresponding field device responds correctly.
Step 9 — Interlock Test
Confirm that the relay output is inhibited when required safety or process permissives are not satisfied.
Step 10 — Sequence Test
Operate the machine through its normal sequence and verify relay switching at each stage.
Relay Output Troubleshooting Guide
Problem 1: IC200MDL930 Is Not Recognized
Possible causes include:
- Incorrect installation
- Poor connector engagement
- Carrier problem
- Configuration problem
- Backplane issue
- Power problem
- Module fault
Recommended Checks
- Verify module seating.
- Inspect the carrier connector.
- Check system diagnostics.
- Verify the I/O configuration.
- Confirm system power.
- Inspect adjacent modules.
- Investigate the carrier and backplane.
Problem 2: PLC Commands the Output but the Load Does Not Operate
Possible causes include:
- Incorrect relay wiring
- Missing field power
- Open field circuit
- Failed load
- Incorrect terminal connection
- Relay contact problem
- Protective device interruption
Trace the circuit:
PLC Command → IC200MDL930 → Relay Contact → Field Wiring → Power → Load
This allows the technician to determine where the control path is interrupted.
Problem 3: Relay Output Remains Inactive
If the PLC indicates that the output should be active but the field device does not respond, check:
- PLC program
- Output address
- Controller status
- Module status
- Field power
- Relay wiring
- Terminal connections
- Relay contact condition
- Connected load
A PLC logic problem can appear identical to a hardware problem.
Problem 4: Relay Output Remains Active
Possible causes include:
- PLC program
- Incorrect output mapping
- Wiring fault
- Relay contact condition
- External circuit problem
- Mechanical relay issue
First determine whether the PLC is still commanding the output.
If the PLC command is inactive but the field circuit remains energized, investigate the relay contact and external wiring.
Problem 5: Output Operates Intermittently
Possible causes include:
- Loose wiring
- Unstable field power
- Relay contact wear
- Mechanical vibration
- Excessive load
- Inrush current
- Electrical interference
- Poor terminal connections
Relay-based outputs should be evaluated under the actual operating conditions of the load.
Problem 6: Relay Chatters or Switches Unreliably
Relay chatter can indicate:
- Unstable control voltage
- Intermittent command
- Poor field wiring
- Loose terminals
- Excessive electrical interference
- Control logic repeatedly changing state
- Mechanical problems
Check the PLC command first, then verify the electrical circuit.
Problem 7: Relay Output Works Without Load but Fails Under Load
This is an important diagnostic symptom.
Possible causes include:
- Excessive load current
- Excessive inrush current
- Voltage drop
- Damaged load
- Poor field power
- Contact resistance
- Incorrect load type
- Inadequate external protection
A relay may appear to operate correctly during a low-load test but experience problems when connected to the actual field device.
Problem 8: Several Outputs Fail Simultaneously
When multiple relay outputs stop operating, investigate shared system components.
Check:
- Field power
- Common wiring
- Controller
- Carrier
- Backplane
- Configuration
- Shared protective devices
If several independent relay outputs fail at exactly the same time, a common power or control problem should be investigated before assuming multiple relay failures.
Problem 9: Replacement Module Has the Same Fault
If replacing the IC200MDL930 does not resolve the problem, investigate:
- PLC program
- Output mapping
- Carrier
- Backplane
- Field power
- Field wiring
- Connected load
- Protective components
A replacement module that exhibits exactly the same symptom often indicates that the original fault exists elsewhere in the system.
Relay Contact Wear and Maintenance
One of the primary differences between relay outputs and solid-state outputs is mechanical contact wear.
Relay contacts can be affected by:
- Switching frequency
- Load current
- Inrush current
- Inductive loads
- Electrical arcing
- Contact contamination
- Mechanical vibration
For systems that switch loads frequently, maintenance personnel should consider the operating duty of the relay contacts when evaluating long-term reliability.
A relay output that controls a highly inductive load may experience significantly different contact stress from one controlling a low-current resistive circuit.
Inductive Load Considerations
Common industrial inductive loads include:
- Contactors
- Relay coils
- Solenoid valves
- Electromagnetic actuators
- Starter coils
When these loads are switched, stored energy can generate electrical transients.
These transients can contribute to:
- Contact arcing
- Contact degradation
- Electromagnetic interference
- Premature component wear
- Control instability
Appropriate external suppression should therefore be considered according to the characteristics of the actual load.
The protection method depends on whether the field circuit is AC or DC and on the electrical characteristics of the load.
AC and DC Load Considerations
Relay contacts can be used in different types of field circuits, but AC and DC loads behave differently during switching.
AC Loads
AC loads naturally pass through current zero points, which can influence arc extinction.
However, inductive AC loads can still generate significant switching stress.
DC Loads
DC circuits can be more difficult to interrupt because the current does not naturally pass through zero in the same manner as an AC waveform.
Therefore, DC inductive loads require careful consideration of contact protection and switching characteristics.
The actual allowable load must always be evaluated against the applicable specifications of the module.
Preventive Maintenance
| Inspection Item | Recommended Check |
|---|---|
| Module Housing | Inspect for physical damage |
| Module Seating | Verify secure installation |
| Connectors | Inspect for contamination |
| Terminals | Check connection integrity |
| Relay Wiring | Verify terminal assignments |
| Field Power | Check voltage stability |
| Relay Loads | Check current and load characteristics |
| Contacts | Investigate signs of wear |
| Carrier | Inspect mechanical condition |
| Cabinet | Check dust and moisture |
| Inductive Loads | Verify suppression |
| Diagnostics | Review recurring output faults |
Preventive maintenance is particularly important in systems where relay outputs operate frequently or control inductive loads.
Wiring Best Practices
Use Correct Terminal Identification
Before connecting the field circuit, verify the exact terminal assignment for the IC200MDL930 installation.
Do not assume that terminal arrangements are identical across different VersaMax output modules.
Separate Control and Power Wiring
Keep control wiring away from high-current conductors where practical.
Particular attention should be given to:
- Motor cables
- VFD cables
- Transformer circuits
- High-current feeders
- Large contactor wiring
Secure All Connections
Loose terminals can cause:
- Intermittent operation
- Voltage drops
- Heating
- Relay chatter
- Unexpected equipment operation
Connections should be inspected during scheduled maintenance.
Avoid Excessive Switching
Relay outputs are mechanical switching devices. Applications with very high switching frequency should be evaluated carefully because repeated operation can accelerate contact wear.
Systematic Fault Diagnosis
A reliable troubleshooting process should follow the complete control path.
Stage 1 — PLC Logic
Determine whether the PLC program is commanding the output.
↓
Stage 2 — Controller
Verify that the controller is processing the output command correctly.
↓
Stage 3 — Backplane
Verify communication between the controller and IC200MDL930.
↓
Stage 4 — Output Module
Determine whether the appropriate relay output responds.
↓
Stage 5 — Relay Contact
Verify that the contact changes state correctly.
↓
Stage 6 — Field Wiring
Check continuity and terminal connections.
↓
Stage 7 — Field Power
Verify the external power source.
↓
Stage 8 — Load
Confirm that the connected device is functional.
This sequence helps distinguish:
PLC Logic Fault
from
Configuration Fault
from
Communication Fault
from
Module Fault
from
Relay Contact Fault
from
Wiring Fault
from
Power-Supply Fault
from
Load Failure
IC200MDL930 Troubleshooting Table
| Symptom | Possible Cause | Recommended Check |
|---|---|---|
| Module not recognized | Installation/configuration | Check module and carrier |
| Output command but no load | Wiring/power/load problem | Trace complete circuit |
| Relay does not switch | Module/control problem | Check PLC command and module |
| Contact switches but load remains OFF | Wiring/load/power | Check field circuit |
| Output remains ON | PLC/wiring/contact issue | Compare PLC command with field state |
| Intermittent operation | Loose wiring/contact wear | Inspect terminals and load |
| Relay chatter | Unstable command/power | Check control and field circuits |
| Works without load but fails under load | Load/inrush/contact issue | Check load characteristics |
| Several outputs fail | Shared power/system issue | Check common circuits |
| Replacement does not help | External fault | Check PLC, wiring, carrier and load |
Key Advantages
- GE VersaMax modular I/O architecture
- Relay-based discrete output interface
- Suitable for industrial automation applications
- Provides contact-based field switching
- Suitable for conventional relay-control circuits
- Suitable for contactor interfaces
- Suitable for valve-control interfaces
- Suitable for alarm and indicator circuits
- Suitable for machine sequencing
- Modular installation
- Compact form factor
- Dimensions of 110 × 66.8 × 50 mm
- Supplied weight of 0.24 kg
Technical FAQs
What is GE IC200MDL930?
The GE IC200MDL930 is a VersaMax Relay Output Module used to provide relay-based discrete output control between the PLC system and external field circuits.
What is the main function of IC200MDL930?
Its primary function is to switch suitable external control circuits according to commands generated by the VersaMax controller.
What is the difference between a relay output and a standard digital output?
A relay output uses electromechanical contacts for switching, while many digital outputs use semiconductor switching devices. Relay outputs can provide flexible contact-based interfacing but require consideration of mechanical contact wear and switching frequency.
What types of equipment can IC200MDL930 control?
Depending on the applicable output specifications, potential applications include:
- Control relays
- Contactors
- Solenoid interfaces
- Indicators
- Alarm circuits
- Auxiliary control devices
What are the dimensions of IC200MDL930?
The supplied dimensions are:
110 × 66.8 × 50 mm
What is the weight of IC200MDL930?
The supplied product information specifies:
0.24 kg
Is IC200MDL930 a PLC controller?
No. It is a modular relay output component used as part of a VersaMax control system.
Why does the PLC command the output but the load does not operate?
Possible causes include missing field power, incorrect relay wiring, an open circuit, a failed load, an incorrect output address, or a relay contact problem.
Why does the relay output remain OFF?
First verify the PLC command. Then check the controller, module configuration, field power, wiring, relay contact, and load.
Why does the output remain ON after the PLC command is removed?
Check whether the PLC command is actually OFF. If the command is OFF but the field circuit remains energized, investigate the relay contact, external wiring, and connected circuit.
Why does a relay output operate intermittently?
Possible causes include loose wiring, unstable power, relay contact wear, excessive load, electrical interference, or unstable PLC logic.
Why does a relay work during testing but fail when the actual load is connected?
The actual load may have higher current, inrush current, or inductive characteristics than the test load. Check the load and switching conditions.
Can inductive loads damage relay contacts?
Improperly controlled inductive loads can increase contact arcing and electrical stress, potentially accelerating contact degradation. Appropriate external suppression should be considered.
Why do several relay outputs fail at the same time?
Check shared field power, common wiring, controller status, carrier, backplane, configuration, and shared protective devices before assuming multiple module failures.
Should IC200MDL930 be replaced immediately after an output failure?
No. First check the PLC command, module status, field power, wiring, relay contact behavior, carrier, and connected load.
How can I determine whether the module itself has failed?
Verify the PLC command, controller status, module installation, field power, wiring, and load. If the external circuit is correct and the appropriate relay output still fails to respond, the module becomes a stronger suspect.
What if a replacement IC200MDL930 has exactly the same fault?
Investigate the external system. Check the PLC program, output mapping, field wiring, power supply, carrier, backplane, and connected load. Identical symptoms after replacement often indicate an external cause.
Conclusion
The GE IC200MDL930 VersaMax Relay Output Module provides a relay-based interface between PLC logic and external industrial control circuits. Its relay architecture makes it suitable for applications involving conventional discrete switching, control relays, contactor interfaces, valve-control circuits, alarms, indicators, equipment enable signals, and machine sequencing.
The supplied physical specifications are 110 × 66.8 × 50 mm, with a stated weight of 0.24 kg.
Correct installation requires secure module seating, accurate terminal wiring, appropriate field power, compatible loads, and consideration of relay switching characteristics. Because relay contacts are mechanical components, load type, switching frequency, inrush current, inductive characteristics, and external suppression should be considered during system design and maintenance.