GE IC693MDL940 Relay Output, N.O., 2 Amp - 16 Point
Relay Output, N.O., 2 Amp - 16 PointIC693MDL940
The 2 Amp Relay Output module for the Series 90-30 Programmable Logic Controller
provides 16 normally-open relay circuits for controlling output loads provided by the user. The
output switching capacity of each output is 2 amps. The output points are arranged in four
groups of four points each. Each group has a common power output terminal. The relay
outputs can control a wide range of user-supplied load devices, such as: motor starters,
solenoids, and indicators. Power for the internal relay circuits is provided by the +24 volt DC
bus on the backplane. The user must supply the AC or DC power to operate field devices.
There are no fuses on this module.
LED indicators which provide the ON/OFF status of each point are located at the top of the
module. The LEDs are arranged in two horizontal rows with eight green LEDs in each row; the top
row labeled A1 through 8 (points 1 through 8) and the bottom row labeled B1 through 8 (points 9
through 16). An insert goes between the inside and outside surface of the hinged door. The surface
towards the inside of the module (when the hinged door is closed) has circuit wiring information,
and circuit identification information can be recorded on the outside surface. The outside left edge
of the insert is color-coded red to indicate a high-voltage module. This module can be installed in
any I/O slot of a 5 or 10-slot baseplate in a Series 90-30 PLC system.
Table 7-19. Specifications for IC693MDL940
Rated Voltage 24 volts DC, 120/240 volts AC (nominal – see the following
table for exceptions)
Operating Voltage 5 to 30 volts DC
5 to 250 volts AC, 50/60 Hz
Outputs per Module 16 (four groups of four outputs each)
Isolation 1500 volts between field side and logic side
500 volts between groups
Maximum Load 2 amps pilot duty maximum per output
4 amps maximum per common
Minimum Load 10 mA
Maximum Inrush 5 amps
On Response Time 15 ms maximum
Off Response Time 15 ms maximum
Int. Power Consumption 7 mA (all outputs on) from 5 volt bus on backplane
135 mA (all outputs on) from relay 24V bus on backplane
Refer to Appendix B for product standards and general specifications.
IC693MDL940 Output Module Field Wiring Information
The following figure provides wiring information for connecting user supplied load devices
and power source to the 2 amp N.O. Relay output module.
Table 7-20. Load Current Limitations for IC693MDL940
Operating
Maximum Current
for Load Type Typical Contact Life
Voltage Resistive Lamp or Solenoid (Number of Operations)
24 to 120 VAC 2 amps 1 amp 300,000
24 to 120 VAC 1 amp .5 amps 500,000
24 to 120 VAC .1 amps .05 amps 1,000,000
240 VAC 2 amps 1 amp 150,000
240 VAC 1 amp .5 amps 200,000
240 VAC .1 amps .05 amps 500,000
24 VDC - 2 amps 100,000
24 VDC 2 amps 1 amp 300,000
24 VDC 1 amp .5 amps 500,000
24 VDC .1 amps .05 amps 1,000,000
125 VDC .2 amps .1 amps 300,000
Assumes a 7 ms time constant
Relay contact life, when switching inductive loads, will approach resistive load contact life if
suppression circuits are used. The following figures are examples of typical suppression
circuits for AC and DC loads. The 1A, 200V diode shown in the DC load suppression circuit is
an industry standard 1N4935. The resistor and capacitor shown for AC load suppression are
standard components, available from most electronics distributors.
DC LOADS
SERIES
90-30
RELAY
OUTPUT
COM
DC SUPPLY
1A, 200V
a45151A
Load Coil
Figure 7-36. Load Suppression Examples for IC693MDL940 Output Module