Specifications

SLC 500 Digital I/O Modules 43
Publication 1746-IN027D-EN-P - December 2012
Relay Contact Ratings
Voltage, operating 5V DC 5...125
24V DC 5...265
Signal delay, max resistive load On = 10.0 ms
Off = 10.0 ms
Backplane current
consumption
5V DC 0.045 A 0.085 A 0.170 A 0.085 A
24V DC 0.045 A 0.090 A 0.180 A 0.090 A
Off-state leakage, max 0 mA
Load current, min 10 mA @ 5V DC
Continuous current per point
(1)
See Relay Contact Ratings on page 43.
Continuous current per module 8.0 A AC
8.0 A /Common
16.0 A AC
8.0 A /Common
16.0 A AC
8.0 A /Common
(4)
(1)
Recommended surge suppression: For relay contact outputs, refer to the SLC 500 Modular Hardware User Manual, publication 1747-UM011.
Connecting surge suppressors across your external inductive load will extend the life of SLC 500 relay contacts.
(2)
Certified for Class 1, Division 2 hazardous location by CSA.
(3)
Removable terminal block.
(4)
The continuous current per module must be limited so the module power does not exceed 1440V A.
Relay Contact Ratings – 1746-IO4, 1746-IO8, 1746-IO12, and 1746-IO12DC
Voltages
Amperes
(1)
(1)
The continuous current per module must be limited so the module power does not exceed 1440V A.
Amperes
(1)
Continuous
Volt-Amperes
Make Break Make Break
Volts (AC), max 120 15 1.5 2.5 1800 180
240 7.5 0.75
Volts (DC), max 125
0.22
(2)
(2)
For DC voltage applications, the make/break ampere rating for relay contacts can be determined by dividing 28VA by the applied DC
voltage. For example, 28V A/48V DC = 0.58 A. For DC voltage applications less than 14V, the make/break ratings for relay contacts
cannot exceed 2 A.
1.0 28
24
1.2
(2)
2.0 28
Specifications – 1746-OW4, 1746-OW8, 1746-OW16, and 1746-OX8
Attribute Value
1746-OW4
(2)
1746-OW8
(2)
1746-OW16
(2)(3)
1746-OX8
(2)(3)