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Rockwell Automation 1790D-XXXX DeviceNet Digital Base Terminal Block CompactBlock LDX I/O Series A User Manual

Page 21

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DeviceNet Digital Base Terminal Block CompactBlock LDX I/O 21

Publication

1790-IN006C-EN-P - May 2006

1790D-TOW6 ac/dc Relay Output Base Block

Attribute

Value

Relay Type

Form A, normally open
Single pole, single throw

Output Voltage Range (load
dependent)

5…28V dc @ 2.0 A resistive
48V dc @ 0.8 A resistive
125V ac @ 2.0 A resistive
250V ac @ 2.0 A resistive

Load, Min

100 µA, 100 mV dc per point

On-state Voltage Drop, Max

0.5V @ 2.0 A, resistive load, 24V dc

Initial Contact Resistance

30 m

Expected Contact Life

300 kcycles resistive
100 kcycles inductive

Off-state Leakage, Max

1.5 mA

Output Delay Time,
On to Off

10 ms max

Output Delay Time,
Off to On

10 ms max

Relay Coil Power
Dissipation

1.7 W @ 28.8V dc

Isolation Voltage

50V dc (continuous), reinforced insulation type,
tested at 1250V ac for 60 s, I/O to system

1790D-T8AO ac Input Base Block

Attribute

Value

Inputs per Expansion Block

8 points non-isolated

On-state Voltage Range

79V ac min
110V ac nom
132V ac max

Input Impedance

18 k

On-state Current

9 mA max @ 132V ac