IAI Rec, Instruction Manual

Page: 37 / 158

Chapter 1 System Configuration and Specifications
1.5 Specifications
ME0394-1A
1-11
Wiring diagram: Stop and drive-source cutoff
1.5.4 Drive Cutoff Circuit
Shown below is a circuit related to the drive cutoff in REC System. Although REC System is
supplied with 24V power from the EC gateway unit, the circuit related to the drive cutoff is on the
EC connection unit side.
■ Each EC connection unit possesses a drive cutoff circuit by a semiconductor to four axes all
together and cuts off the motor power supply with an emergency stop switch on a teaching
pendant.
■ There is an interface (Drive Cutoff Connector: MPI/MPO) on each axis available for external
drive cutoff equipped on each EC connection unit.
■ The drive cutoff circuit by a semiconductor possesses a future for overcurrent detection and in-
rush current control.
[Example of Wiring for Stop and Drive Cutoff]
Note 1 When there is nothing to be connected to the SIO connector, STOPA and STOPB should
make short-circuit inside the controller.
Teaching pendant
Stop switch
EC Gateway unit
EC Connection Unit
24V Input
Control
power
Drive-source
cutoff connector
Hig
h-s
ide
pr
ote
cti
on c
irc
uit
M
ot
or
p
ow
er
I
fo
r EC
M
ot
or
p
ow
er
II
for
EC
M
ot
or
p
ow
er
II
I f
or
EC
M
ot
or
p
ow
er
IV
fo
r E
C