
9. CONNECTION
B–65192EN/02
98
Monitoring contacts RL1 and RL2, or RL2 and RL3, are used as the direct
output of the auxiliary contact of a contactor or relay for a dynamic brake.
Machine tool builders can use these contacts when designing a safety
device or the like. The contacts correspond to MC1 and MC2 of a C series
amplifier. The output from the contacts of some models differs from that
of the C series amplifier.
L1
L2
L3
L1 (R)
L2 (S)
L3 (T)
T1 –2
T1–3
T1–4
RL2 (RL3)
T1–7
T1–8
RL1 (RL2)
Power supply contacts
Coil
Coil
Auxiliary contact of
contactor or relay for
dynamic brake circuit
Internal condi-
tion circuit
SVU/SVUC
Safety device for
monitoring the
servo amplifier
power supply
Table 9.3.15 MCC Monitoring Contact
Auxiliary contact
(while the power
supply is shut off)
Terminal
block
Signal name
C series amplifier b contact (closed) T1 (7–8) MC1–MC2
SVUs and SVUCs
except SVU1–130
or SVUC1–130
b contact (closed) T1 (7–8) RL1–RL2
SVU1–130,
SVUC1–130
a contact (open) T1 (7–8) RL2–RL3
For details of the contact ratings, see Chapter 3, ”Specification.”
9.3.15
Monitoring Contact
Output