Emerson IC693MDL940 16-Point Relay Output Module
A normally open, two-amp relay output module for mixed AC or DC field loads.
Overview
IC693MDL940 provides sixteen normally open relay output circuits for a Series 90-30 PLC. The outputs are divided into four groups of four, with one common power terminal per group, so field voltage and group loading must be reviewed together.
The module supplies no field-load power and contains no output fuses. User wiring provides the AC or DC source, while the backplane supplies the internal relay circuits and the front LEDs show commanded point status.
Specs
| Manufacturer | Emerson / GE Fanuc |
|---|---|
| Model | IC693MDL940 |
| Product Family | Series 90-30 |
| Product Type | Normally open relay output module |
| Outputs | 16 |
| Grouping | Four groups of four outputs; one common per group |
| Nominal Voltage | 24 VDC or 120/240 VAC |
| Operating Voltage | 5 to 30 VDC; 5 to 250 VAC at 50/60 Hz |
| Maximum Load | 2 A pilot duty per output |
| Maximum Common Current | 4 A per common |
| Minimum Load | 10 mA |
| Maximum Inrush | 5 A |
| Isolation | 1500 V field to logic; 500 V between groups |
| Response Time | 15 ms maximum on; 15 ms maximum off |
| Backplane Consumption | 7 mA from 5 V bus and 135 mA from relay 24 V bus with all outputs on |
| Field Protection | No onboard output fuses |
| Installation | Any I/O slot in a Series 90-30 five- or ten-slot baseplate |
Features
Sixteen normally open relay contacts for user-supplied AC or DC loads.
Four common groups that permit separately engineered field circuits.
Front status indication for all sixteen commanded outputs.
Relay isolation between field circuits and controller logic.
Applications
- Motor-starter, solenoid and indicator control within the documented contact ratings.
- Mixed-voltage machine circuits separated across the four common groups.
- Like-for-like support of Series 90-30 cabinets with existing relay-output wiring.
Lifecycle
- Document every group voltage, common conductor, point load, inrush and suppression component.
- Calculate the four-amp common limit and ambient-temperature load before reusing the existing wiring.
- Add suitable branch protection because IC693MDL940 has no onboard output fuses.
- After exchange, verify de-energized continuity first, then conduct a controlled point-by-point load test and record contact behavior.
FAQ
Why can an IC693MDL940 contact fail early even when its steady current is below two amps?
Lamp, solenoid and contactor inrush plus unsuppressed inductive energy can shorten relay life; the switching duty and suppression network must be assessed.
Can different field voltages share one IC693MDL940 common group?
No mixed potentials should be placed on a shared common. Separate the circuits by group and maintain the required isolation and wiring rules.
What protection should be added around IC693MDL940?
Use field-side branch protection sized for the conductors and loads because the module contains no output fuses.
What should be inspected when one IC693MDL940 group loses all four outputs?
Check the group common, field source, protection device, terminal connection and wiring before treating four relays as independent failures.
How should a spare IC693MDL940 be accepted before production use?
Confirm label and condition, inspect terminals, test each relay at an appropriate low-risk load and then validate the actual field circuits under an approved startup plan.
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