Yaskawa VS-626 MC5 - Manual (Page 277)

Appendix
12.4.1 Using a Braking Resistor Unit
- 8
12.4 Wiring Examples
12.4.1 Using a Braking Resistor Unit
CIMR-MC5A20P4 to -MC5A27P5 (200 V class Inverters of 0.4 to 7.5 kW)
CIMR-MC5A40P4 to -MC5A4015 (400 V class Inverters of 0.4 to 15 kW)
Short-circuit bar
¨ 1
DC Reactor to
improve input
power factor
(Optional)
Braking Resistor overheating contacts
(Thermal overload relay trip contacts)
Braking Resistor Unit *3
VS-626MC5
MCCB
3-phase power
200 to 230 V
50/60 Hz
or
380 to 460 V
50/60 Hz
R
M
C
R (L1)
S S (L2)
T T (L3)
*1 400/200 V
THR
X OFF ON M
C
SA
Overload relay trip contact
of Braking Resistor Unit
1 2
MC TRX
TRX
20 18
Fault contacts
A sequence is required to turn
OFF the power supply for the
thermal overload relay trip con-
tacts of the Braking Resistor Unit.
¨ 2 B1 B2
SA
SA
THR
X
U (T1)
V (T2)
W (T3)
Motor
IM
(200 V class Inverters: Ground
to 100
: max., 400 V class In-
verters: Ground to 10 : max.)
1 2
B P
MC
©
*2
* 1 A transformer is not required for 200 V class Inverters.
* 2 Remove the short-circuit bar (normally connected) from between terminals
¨ 1 and ¨ 2 when connecting a DC Reactor (Optional).
* 3 Disable stall prevention during deceleration by setting L3-04 to “0” or “3”
when using a Braking Resistor Unit. The motor may not stop within the de-
celeration time if this setting is not changed.
12.4.2 Using a Braking Unit and Braking Resistor Unit
CIMR-MC5A2011 -MC5A2015 (200 V class Inverters of 11 kW 15 kW)
U (T1)
©
V (T2)
W (T3)
MCCB
R
MC
R (L1)
S S (L2)
T T (L3)
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
3
Braking Unit
3 4
Motor
IM
(Ground to 100 : max.)
¨ 1
DC Reactor to
improve input
power factor
(Optional)
Braking Unit
(Optional)
¨ 2 ¨ 3
¨ ¨ 0 P
B
Braking Resistor Unit *2
(Optional)
1 2
Braking Resistor overheating contacts
(Thermal protector trip contacts)
Level
detector
3-phase power
200 to 230 V
50/60 Hz
3 4
VS-626MC5
©
MC
A sequence is required to turn
OFF the power supply for the ther-
mal overload relay trip contacts of
the Braking Resistor Unit.
*1
* 1 Remove the short-circuit bar (normally connected) from between termi-
nals ¨ 1 and ¨ 2 when connecting a DC Reactor (Optional).
* 2 Disable stall prevention during deceleration by setting L3-04 to “0” or “3”
when using a Braking Resistor Unit. The motor may not stop within the de-
celeration time if this setting is not changed.
Short-circuit bar
© 0
Forward Run/Stop
Forward run command
(forward run when closed)
Reverse Run/Stop
Reverse run command
(reverse run when closed)
External fault
12