3.9 Selecting and Connecting a Dynamic Brake Unit
3-45
3
Wi
ring and
C
onne
ctio
n
(2) Using a Dynamic Brake Resistor from Another Company
Using NO Contacts for the Dynamic Brake Contactor
The following example shows connecting dynamic brake resistors for the SERVOPACK for one winding.
When connecting dynamic brake resistors for actual operation, refer to the following figure and connect resis-
tors for two windings.
∗
The above figure is for using a dynamic brake contactor with NO contacts. The dynamic brake answer signal (a signal
from NO auxiliary contacts) is input to CN1-45. To indicate an error if the input signal to CN1-45 turns OFF (open)
while the dynamic brake is activated, the Pn515 parameter in the multi-winding drive unit must be set to n.
E
. If
the dynamic brake answer signal is not used, Pn515 is set to n.
8
(default setting).
Note 1. If you assign more than one signal to the same input circuit, OR logic will be used and any of the input signals
will cause the circuit to operate. This may result in unexpected operation.
2. The maximum current for DB24 and DBON is 300 mA.
DV
DU
DW
SERVOPACK
Dynamic brake contactor
(Auxiliary contacts)
Dynamic brake resistor
For I/O
power supply
24 V
0 V
DBON
DB24
Main circuit surge
absorption unit
Coil surge
absorption unit
CN115
24 V
DB
47
45*
CN1
0 V
DB
