Mitsubishi FR-BU2-1.5K, Instruction Manual

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5
WIRING
Cont
rol c
ir
cuit
PC
*3
External
transistor
common,
Contact input
common
(source)
When connecting the transistor
output (open collector output),
such as a programmable
controller (PLC), connect the
positive external power supply
for transistor output to this
terminal to prevent a
malfunction caused by
undesirable currents.
When source logic has been
selected, this terminal serves
as a contact input common
terminal.
---
Relay
output
A
Relay output 1
(Alarm output)
1 changeover contact output
indicates that the brake unit
protective function has
activated.
• Normal
Across B-C: Continuity
Across A-C: Discontinuity
• Alarm
Across B-C: Disontinuity
Across A-C: Continuity
230VAC 0.3A
30VDC 0.3A
B
C
*3 Do not connect terminals SD, PC and MSG each other or to the ground.
Doing so may damage the brake unit.
For sink logic (initial status), terminal SD acts as the common terminal of contact
input. For source logic (initial status), terminal PC acts as the common terminal of
contact input.
Terminal Symbol Terminal Name Description Rating