The GE Fanuc IC694MDL930, also cataloged as the IC694MDL930 Relay Output Module, operates as a dedicated hardware component for discrete load switching execution within PACSystem RX3i platforms.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | IC694MDL930 |
| Brand | GE Fanuc / Emerson |
| Origin | USA |
| Weight | 0.40 kg (0.88 lbs) |
| Dimensions | Standard RX3i single-slot module |
| Operating Temp | 0 to 60 deg C |
| Power Consumption | 6 mA at 5 VDC, 70 mA at 24 VDC backplane relay power |
| Number of Channels | 8, individually isolated |
| Contact Form | Form A (Normally Open, N.O.) |
| Output Voltage Range | 5-250 VAC / 5-30 VDC |
| Nominal Voltage | 120/240 VAC; 24 VDC |
| Switching Current | 4.0 A per point resistive (2.0 A pilot duty) |
| Total Module Load | 20 A maximum per module (UL installations) |
| Minimum Output Current | 10 mA per point |
| Maximum Inrush Rating | 5.0 A |
| Response Time | 10 ms to 15 ms maximum |
| Field-to-Backplane Isolation | 250 VAC continuous; 1500 VAC for 1 minute |
Backplane Bus Communication Velocity & Firmware Integrity
The IC694MDL930 interfaces via the PACSystem RX3i backplane bus to execute high-density signal transfer while consuming minimal backplane power. With firmware flash compatibility across RX3i and Series 90-30 CPUs, the module updates relay coil logic synchronously with host CPU scan cycles. Individual point-to-point galvanically isolated channels protect internal backplane bus communication velocity from external inductive transients and ground potential differences across field wiring.
Frequently Asked Questions
Q: What is the backplane current draw for the IC694MDL930 when all channels are active?
A: The module draws a maximum of 6 mA at 5 VDC and 70 mA at 24 VDC from the backplane relay power supply when all outputs are energized.
Q: What is the maximum load rating allowed per module under UL guidelines?
A: Under UL installations, the module supports up to 4.0 A resistive per output channel, provided the total current across all channels on the module does not exceed 20 A.
Q: Can channels on the IC694MDL930 switch different voltage types simultaneously?
A: Yes, because each of the 8 Form A channels is individually isolated point-to-point, separate outputs can handle distinct AC or DC voltage potentials within 5-250 VAC or 5-30 VDC ranges.
Field Installation Guidelines
- Ensure main power to the RX3i baseplate is disconnected prior to slot insertion or removal to prevent electrical arcing across backplane connectors.
- Seat the module firmly into the selected baseplate slot until the top and bottom retaining latches click into place.
- Wire output circuits using designated terminal blocks, ensuring field wiring bend radius limits are respected to prevent strain on terminal connections.
- Connect field wiring shields and module grounding points to the main system chassis ground to ensure proper 1500 VAC frame isolation.
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