
26
(2) Wiring the motor power cutoff relay
Explained below is a safety circuit conforming to safety category 2.
The user is responsible for implementing additional safety measures in the actual circuit configuration,
such as providing double contactor contacts to prevent fusing.
The circuit illustrated below is for reference purposes only.
•
The input side of the motor drive power supply is connected to the MPI terminal, while the output side
is connected to the MPO terminal. Connect a contactor or other contact device to these terminals.
(Note) The rush current must be 8 A or less. The rated current is 2 A.
•
The contact for the EMG switch on the teaching pendant is provided by the S1/S2 terminals.
(Note) When connecting the teaching pendant to a SIO converter, the contact for the EMG switch on the
teaching pendant is provided by the EMG1/EMG2 terminals on the SIO converter.
24V
0V
FG
S1
S2
MPI
MPO
24V
N
FG
S1
S2
MPI
MPO
24V
N
FG
S1
S2
MPI
MPO
24V
N
FG
S33 S34 S11 S12 13
23
33
A1
A2
14
24
34
Input power supply
[Controller 1]
[Controller 2]
[Controller 3]
Connect to 24-V terminal
Connect to N terminal
Connect to FG terminal
EMG sign
al
Contactor
External reset switch
Safety relay unit
Phoenix contact (PSR-SCP-24UC-/ESA2/4X1/1X2/B)