
B-63003EN-2/01 Chapter 1 Assembling the 16i/18i/21i 1 - 27
1
Connecting the E-Stop and Main Power Control Signal
Connecting the machine emergency stop
Figure 1-13 below illustrates the connection of the machine emergency stop to the power
supply module. You must supply the cable for this connection. Connectors are supplied with
the servo amplifier.
1. Locate the 3-pin connector identified by FANUC part #
A02B-0120-K321
.
2. Connect the machine emergency stop device across pins 2 and 3 of the connector
using a normally closed contact. Assemble the connector just like you see it in the
diagram below using a 16 gauge (1.25 mm
2
) wire.
3
.
Connect the wired connector into the slot labeled
CX4 ESP
on the face of the power
supply module.
Note
If a normally closed contact is not connected between pins 2 and 3 on
connector
CX4 ESP
, the amplifier will not energize the motor and an alarm
will be initiated. If no E-stop switch is used, you must make this connection
with a wire jumper.
Figure 1 - 13. Connecting the machine emergency stop signal
+24V
Machine E-STOP Device(s)
Normally Closed
*ESP
CX4 ESP
connector pin layout