3.4 Wiring Main Circuit Terminals
3 - 19
Connecting Braking Units in Parallel
When connecting two or more Braking Units in parallel, use the wiring and connectors shown in
Figure
3.16
. There are connectors for selecting whether each Braking Unit is to be a Master or Slave. Select “Mas-
ter” for the first Braking Unit only, and select “Slave” for all other Braking Units (i.e., from the second
Unit onwards).
Braking resistor overheat-
ing contacts (Thermal
protector contacts)
1
2
Braking
Resistor
Unit
¨
Level detector
MASTER
SLAVE
+15
Braking Unit #2
MASTER
SLAVE
Cooling fin overheating
contacts (thermoswitch
contacts)
Braking Unit #1
¨
3
©
VS-616G5
©
¨
0
©
0
Braking Unit #
3
MASTER
SLAVE
4
3
4
3
4
3
1
2
1
2
1
2
5
6
P
5
6
P
5
6
¨
©
¨
0
©
0
¨
©
¨
0
©
0
P
B
1
2
Braking
Resistor
Unit
P
B
1
2
Braking
Resistor
Unit
P
B
Braking resistor overheat-
ing contacts (Thermal
protector contacts)
Cooling fin overheating
contacts (thermoswitch
contacts)
Braking resistor overheat-
ing contacts (Thermal
protector contacts)
Cooling fin overheating
contacts (thermoswitch
contacts)
Fig
3.16
Connecting Braking Units in Parallel
Power Supply Sequence
VS-616G5
MCCB
Three-phase power
:
200 to 230 V, 50/60 Hz
or
380 to 460 V, 50/60 Hz
R
MC
R (L1)
S
S (L2)
T
T (L3)
*
400/200 V
THRX OFF
ON
MC
SA
Overload relay trip contact
of Braking Resistor Unit
1
2
MC
TRX
TRX
20 18
Fault contacts
SA
SA
THRX
MC
*
Use a transformer with 200 and 400 V outputs for the power supply of the
400 V Inverter.
Fig
3.17
Power Supply Sequence
3
Summary of Contents for VARISPEED-616G5
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