Rockwell Automation 8520 9/Series CNC Integration Maintenance Manual Documentation Set - Manual (Page 548)

I/O Interface
Section 10A
10A-25
The relay life of output contacts used in the E153 depends on the load
being controlled. The following shows contact performance for a load that
has surge suppression applied across it:
Load Switching Voltage Relay Life
Allen-Bradley Bulletin 500 Size 1
ac Contactor
120V ac 2,500,000 (operations)
Figure 10A.19 showing the output device connection diagram, shows a
transistor output connection.
Figure 10A.19
Transistor Output Connection (E154)
B11
Relay type output Relay type output
V dc1 A12 A13 A14 A15 A16 B12 B13 B14 B15 B16 A11
Noise
suppressor
Noise
suppressor
Noise
suppressor
COM
1
COM
2
M
Solenoid Solenoid
Transistor output - Group 1 Transistor output - Group 2
115 V ac 24 V dc 48 V dc
L1 (H) L2 (L) dc (+) dc (-) dc (+) dc (-)
Customer supplied Customer supplied Customer supplied
11324-I
V ac/V dc Common V ac/V dc Common
V dc2
Important: Transistor output is a source type output, which is isolated by
means of a photocoupler. An external surge suppressor should be
connected to protect transistors from a transient voltage spike, which
occurs when an inductive device is turned off.
Important: A noise suppressor is not incorporated in the relay type output
circuits (terminals A11 and B11). Connection of an external surge
suppressor is recommended to protect the relay contact from a transient
voltage spike, which occurs when an inductive device is turned off.