Description
The GE Fanuc IC693MDL733 is a 12 V DC / 24 V DC, 0.5 A positive logic (sourcing) discrete output module designed for the Series 90-30 PLC platform. It provides 12 discrete output channels divided into two isolated groups of 6 channels each, enabling it to drive field loads such as solenoids, motor starters, indicators, and interposing relays from a central rack assembly.
Commercial Supply Status
- Condition: New Original (New Surplus) or Refurbished (Fully Tested)
- Availability: In stock
- Lead Time: 1–2 business days
- Warranty: 12 months
- Pricing Note: Price subject to market conditions; contact us for a firm quote.
Field Engineering & Integration Notes
In field deployments of Series 90-30 platforms, the IC693MDL733 operates as a sourcing module, meaning it delivers current from the user-supplied power terminal to the connected field load. A common issue during 2 AM field troubleshooting is an unexpected “Loss of I/O Module” fault or dead output channels. This is frequently caused by a blown internal fuse or missing external field power.
The module features an internal 5 A fuse for each of the two isolated groups to protect the internal circuitry against over-current faults. However, these fuses are soldered onto the internal circuit board rather than being front-accessible. If a field short-circuit occurs, the module must be removed from the backplane to replace the internal fuse. To prevent this maintenance bottleneck, always install fast-acting external inline fuses (rated at a maximum of 2 A to 3 A) on the field wiring side for each output channel or group common line.
Technical Specifications
| Parameter | Value |
| Module Type | Discrete Output, Positive Logic (Sourcing) |
| Output Channels | 12 channels (split into 2 isolated groups of 6) |
| Rated Voltage | 12 V DC to 24 V DC |
| Operating Voltage Range | 12 V DC to 24 V DC (+20%, −15%) |
| Output Current (Per Channel) | 0.5 A maximum |
| Output Current (Per Group) | 3.0 A maximum |
| Inrush Current Capability | 2.0 A maximum for 10 ms |
| On-State Voltage Drop | 1.0 V DC maximum |
| Off-State Leakage Current | 1.0 mA maximum |
| Internal Power Draw | 50 mA from the 5 V DC backplane bus |
| Internal Fuses | 2 x 5 A fuses (one per group, non-user-serviceable in-field) |
| Isolation Rating | 1,500 V RMS between field side and backplane |
| Status Indicators | 12 green LEDs (logic side indication of terminal status) |
Terminal Pin Configuration & Wiring Matrix
The module utilizes a removable 20-point front terminal block. The 12 outputs are arranged across two independent, isolated power circuits:
- Group 1 (Pins 2 to 7): Output channels 1 through 6. Pin 1 provides the external DC power supply input (V+) for this group, and Pin 10 acts as the common (V-) line.
- Group 2 (Pins 12 to 17): Output channels 7 through 12. Pin 11 provides the external DC power supply input (V+) for this second group, and Pin 20 acts as the common (V-) line.
- Isolation Integrity: Because Group 1 and Group 2 are galvanically isolated from each other, you can run Group 1 on a 12 V DC loop while running Group 2 on an entirely separate 24 V DC battery system if required by the plant schematic.
Frequently Asked Questions
- Q: Can this module be hot-swapped while the Series 90-30 PLC backplane is powered?
- A: No. The Series 90-30 IC693 standard backplane architecture does not support hot-swapping. You must completely de-energize the PLC power supply before inserting or removing the module from its backplane slot to prevent logic bus errors or component damage.
- Q: The front LED status indicator for an output channel turns ON, but there is no voltage at the terminal. What is wrong?
- A: The status LEDs are driven from the logic side of the optocoupler circuit. If the LED lights up but the field load fails to energize, check the external field power supply loop connected to Pin 1 (or Pin 11). If external power is present, the internal group fuse on the board is likely blown.
- Q: Can the IC693MDL733 drive inductive loads like large solenoid valves directly?
- A: While the solid-state outputs can handle up to 0.5 A, high inductive energy spikes during de-energization will rapidly degrade the output transistors. Always install an external flyback diode across the terminals of any DC inductive load to suppress voltage transients. Verify specific inductive load ratings on the OEM datasheet before final commissioning.
