Panasonic MINAS A5 Series Operating Instructions Manual page 95

2
Preparation
Compose the circuit so that the main circuit power will be shut off when an error occurs.
In Case of 3-Phase, H-frame, 400 V type
Power supply 3-phase, 380V
MCCB
Power supply
(3-phase)
Power supply
Insulated
( Neutral point )
DC24V
The AC voltage across
DB1 and DB2 must be
300 V or below.
Dynamic Brake resistor
Note 4)
Note 1)
Shielding the circuit is recommended for the purpose of noise reduction.
Note 2)
Magnetic contactor MC2 must be the same as the contactor MC1 in the main circuit.
Note 3)
Servo may be turned on in the external sequence if the dynamic brake resistor deposits: to protect the
system, provide the auxiliary contact.
Note 4)
Use 4.8 , 400 W resistor (to be supplied by customer).
Note 5)
To use the external dynamic brake resistor:
Connect the R1 and R2 terminals to B1 and B2.
Connect the T1 and T2 terminals as shown in the left diagram.
Connect the 24 V and 0 V terminals to a 24 VDC power supply.
Connect the E terminal to the ground.
Refer to P.7-122 "Options" for the specifications of the external regenerative resistor.
Note 6)
Provide an external protective device (e.g. thermal fuse) to monitor the temperature of the external
dynamic brake resistor.
Note The wiring indicated with the broken line shall be provided only when required.
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2.
Wiring Diagram (H-frame, 400 V type)
–15% to 480V +10%
ON
Note 1)
Insulated +
DC24V
+
regenerative resistor
Note 1)
MC2
Coil surge suppression units
Note 6) Note 6) Note 6)
Note 3)
MC2
Motor
Insulated
DC12 to 24V
(±5%)
ALM
OFF
Coil surge suppression units
L
L1
Main power
L2
supply
L3
MC1
24V Control power
supply
0V
External
B1
B2
Note 5)
NC
DB1
DB2
U
Motor
V
connection
W
ALM
37
ALM＋
+
36
ALM−
Built-in thermostat of
an external regenerative
MC1
resistor
(T1 and T2 terminals)
2-47
1
2
3
4
5
6
7