Rockwell Automation 1336VT 5-300 AMP (2.2-160KW) - Manual (Page 112)

Logic Interface Options
Appendix A
A-14
If solid state switches are used, the leakage current rating of the switch
must be verified. In some instances a burden resistor may be required in the
switch circuit to help ensure correct circuit operation.
•
For solid state switches with a leakage current less than 1mA, a burden
resistor is not required.
•
For solid state switches with a leakage current rating of 1-5mA, a 2.5k
Ω
,
10W burden resistor must be used in each solid state switch circuit.
2.5k Ω
User 115V AC Supply
EARTH
GROUND
User
Solid State Switch
User
Burden Resistor
Terminals 21, 25 or 29 Terminals 19, 20, 22, 23, 24, 26, 27, 28 or 30
•
For solid state switches with a leakage current rating greater than 5mA,
contact your nearest Allen–Bradley Drives Distributor of Sales Office
for assistance.
!
ATTENTION: Burden resistors are physically hot when
solid-stated switches are energized. This is a normal operating
condition. Touching the resistors can cause burns or injury.