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Key Technical Specifications
| Parameter | Value |
|---|---|
| Manufacturer | GE Fanuc / GE Intelligent Platforms |
| Current Product Brand | Emerson Automation |
| Series | Series 90-70 |
| Part Number | IC697MDL740 |
| Product Type | Discrete DC output module |
| Output Logic | Positive logic / sourcing |
| Number of Outputs | 16 |
| Output Grouping | Four isolated groups of four outputs |
| Rated Voltage | 24 or 48 V DC |
| Output Voltage Range | 20–60 V DC |
| Continuous Current | 2 A maximum per point |
| Group Current | 4 A maximum per group |
| Inrush Current | 20 A maximum for 20 ms |
| Output Voltage Drop | 0.8 V maximum; 0.4 Ω maximum |
| On Response Time | 2 ms maximum |
| Off Response Time | 2 ms maximum |
| Output Leakage | 1 mA maximum |
| Isolation to Backplane | 1,500 V |
| Isolation Between Groups | 500 V |
| Group Protection | One 10 A slow-acting fuse per group |
| Fuse Types | Bussmann MDA-10 or Littelfuse 326010 |
| Fault Indication | Internal FUSE LED |
| Default Output State | Maintain existing state or turn outputs off, software-configurable |
| Backplane Current | 0.15 A from the 5 V bus |
| Mounting | Series 90-70 VME rack |
| Terminal Wiring | Detachable field-wiring terminal board |
| Wire Range | AWG 22 through AWG 14 |
| Compatible Loads | Solenoids, motor starters, indicators, contactors |
| Condition | Must be stated as New Original, New Surplus, or Refurbished (tested) |
GE Fanuc IC697MDL740 is a Series 90-70 24/48 V DC positive-logic output module with 16 points arranged in four isolated groups of four. Each point supports up to 2 A continuously, while each group is limited to 4 A.
The module supports 20 A inrush for 20 ms, 2 ms maximum on/off response, 1,500 V isolation from the backplane, and individually fused output groups. The internal FUSE LED indicates an open group fuse.
Product Introduction
GE Fanuc IC697MDL740 is a Series 90-70 high-current discrete output module for switching 24 or 48 V DC loads. It provides 16 positive-logic sourcing outputs in four isolated groups, with a 2 A per-point rating and 4 A maximum per group.
This output card is suited to solenoids, motor starters, contactors, and indicator loads with high inrush demand. Verify the output group wiring, fuse type, load current, suppression, terminal board, and configured default state before replacement.
IC697MDL740
IC697MDL740
Troubleshooting Quick Reference
| Symptom | Possible Cause | Relevance to This Part | Quick Check Method | Recommendation |
|---|---|---|---|---|
| All outputs are off | Missing field supply, open group fuse, or PLC output command absent | ✅ High | Measure 20–60 V DC at the group supply terminals and inspect the FUSE LED | Check field power and group fuses before replacing the module |
| One group is off | Open 10 A fuse, missing group supply, or shorted load | ✅ High | Measure group voltage and test the fuse with power isolated | Replace only with the specified slow-acting fuse after clearing the fault |
| One point will not turn on | Open load, wiring fault, PLC logic issue, or failed output transistor | ✅ High | Check the point LED, output voltage, and load continuity while commanded on | Diagnose the load and command before replacing the card |
| Output turns off under load | Short circuit, group overload, or thermal/current protection | ✅ High | Measure load current and total group current; inspect for shorts | Keep each group at or below 4 A and each point at or below 2 A |
| FUSE LED is illuminated | One internal group fuse is open | ✅ High | Isolate power, identify the affected group, and test the fuse | Find the short or overload before installing a replacement fuse |
| Output voltage is low | Excessive load, long cable, undersized wiring, or supply sag | ✅ High | Measure voltage at the module and at the load while energized | Correct the supply or wiring before replacing the module |
| Output remains energized | PLC logic, configured maintain-state behavior, or failed output device | ✅ High | Remove the command and check the configured default-state setting | Verify software behavior; replace the module if the point remains on with no command |
| Contactor chatters | Voltage drop, insufficient supply, loose terminal, or inadequate suppression | ✅ Possible | Measure voltage at the contactor coil during pickup and hold | Correct the field circuit and add approved coil suppression |
| Module reports a rack fault | Backplane connector issue, rack configuration error, or module failure | ✅ High | Read the Series 90-70 diagnostic table and reseat with power isolated | Check rack and configuration before replacing the module |
| Output fails on inductive load | Back EMF, incorrect coil suppression, or load exceeding ratings | ✅ High | Inspect the coil suppression device and monitor output voltage during turn-off | Add suitable DC suppression and verify load compatibility |
| Only some outputs fail | Point-level output damage, wiring error, or individual load fault | ✅ High | Test failed points with a known-good load within rating | Replace the module if multiple verified loads fail on the same points |
| Replacement does not fit | Incorrect mechanical keying, terminal board, or rack position | ✅ High | Compare the card key, terminal board, and rack slot | Use the exact Series 90-70 module and compatible terminal hardware |
| Output group overheats | Group current above 4 A or high ambient temperature | ✅ High | Measure total group current and inspect ventilation | Redistribute loads or reduce group current |
| Field wiring is loose or damaged | Excessive wire size, poor termination, vibration, or terminal-board wear | ✅ Possible | Inspect terminals and verify AWG 22–14 wire range | Replace damaged terminal hardware and retorque connections |
Critical warning: Each group requires its own field power connection because the four isolated groups are not internally connected. Turn off rack power and remove field power before removing the terminal board. User field wiring can remain hazardous even after PLC power is switched off.
Frequently Asked Questions (FAQ)
What is GE Fanuc IC697MDL740?
It is a Series 90-70 16-point positive-logic DC output module rated for 24/48 V DC loads. The outputs are arranged as four isolated groups of four, with 2 A per point and 4 A per group.
Can each output handle 2 A continuously?
Yes, under the specified conditions, but the total current for each four-point group must remain at or below 4 A. Do not calculate capacity by multiplying 2 A by all 16 points.
What voltage can the module switch?
The rated voltage is 24 or 48 V DC, with a specified output range of 20–60 V DC. Confirm the actual field supply and load voltage before wiring.
What fuse does IC697MDL740 use?
Each group uses a 10 A slow-acting fuse. The GE Fanuc datasheet identifies Bussmann MDA-10 and Littelfuse 326010 as approved fuse types. Do not substitute a fast-acting fuse or increase the rating.
Is IC697MDL740 compatible with RX3i?
It is a native Series 90-70 module. For an RX3i migration, Emerson documents IC695MDL765 with the IC695CRH038 harness assembly as the replacement path. Do not plug the IC697 module directly into an RX3i rack.
Does it support inductive loads?
Yes. The module is intended for loads such as solenoids and motor starters and has high inrush capability. Add appropriate flyback suppression and verify the load’s steady-state and inrush current.
What happens if the PLC or rack loses communication?
The output default behavior can be configured to maintain the existing output state or turn outputs off. Verify the application’s configured behavior before commissioning because the wrong setting can create an unsafe machine state.
Is the unit new or refurbished?
The part number does not establish condition or revision. State the actual status as New Original, New Surplus, or Refurbished (tested). A proper test report should cover all 16 outputs, all four group fuses, output voltage drop, 2 A load operation, inrush response, LEDs, default-state behavior, rack communication, and insulation checks.
