Yaskawa VS-626 MC5 - Manual (Page 281)

Appendix
12.4.4 Using Three Braking Resistor Units in Parallel
- 12
12.4.4 Using Three Braking Resistor Units in Parallel
Braking
Resis-
tor Unit Braking
Resis-
tor Unit
Voltage
B
¨ 0
400
400/200V
M
r
460/440/415/
400/380V
IM
3 4
3
5 +15
1 2
P
1
2
3 4
6
MASTER
SLAVE
1 2
P B
1 2
P B
VS-626MC5
R
S
T
MC
U
V
W
R
S
© ¨ 3
T
THRX OFF ON MC
SA
1 2
MC TRX
TRX
20 18
SA
SA
THRX
MC
© ¨ © 0
18
19
20
External contact
output
A sequence is required to turn
OFF the power supply for the ther-
mal overload relay trip contacts of
the Braking Resistor Unit.
Disable stall prevention during deceleration by setting L3-04 to “0” or “3” when using a Brak-
ing Resistor Unit. The motor may not stop within the deceleration time if this setting is not
changed.
Forward Run/Stop
Forward run command
(forward run when closed)
Reverse Run/Stop
Reverse run command
(reverse run when closed)
External fault
1
2
3-phase power
380 to 460 V
50/60 Hz
Cooling fan
Motor
(Ground to 10 : max.)
MCCB
Overload relay trip contact of
Braking Resistor Unit
Fault contacts
Thermal protector
Thermal switch
Level
Thermal protector Thermal protector
Braking
Resis-
tor Unit
Braking Unit
setting
Braking Unit
12