5.3 SERVOPACK Models without a Built-In Dynamic Brake
5.3.4 Parameter Settings for the Dynamic Brake Circuit
5-17
5
W
iring and Settings for the Dynamic Brake
Operating Time of the Dynamic Brake
The operating time of the dynamic brake is the total value of the operating times of the relay
and Magnetic Contactor.
The operating times of the selected parts are given in the following table.
Operating Times of Selected Parts
*
The operating time values are those listed in the manufacturers' catalogs. Refer to the materials from the manu-
facturers for details on the operating conditions.
Dynamic Brake Operating Time
Timing Chart
The SERVOPACK monitors the status of the /DBON and /DBANS signals. The A.F30 (Dynamic
Brake Circuit Error) alarm will occur if a disagreement in the status of the /DBON and /DBANS
signals occurs for 0.14 s or longer.
Part
Model
Manufac-
turer
Operating Time
*
Sym-
bol
Relay
(DBRy1)
G6B-4BND
OMRON
Corpora-
tion
Operating time: 10 ms or less (actual value: approx. 3
ms)
T
R11
Operating time: 15 ms or less (actual value: approx. 4
ms)
T
R12
Relay
(DBRy2)
Operating time: 10 ms or less (actual value: approx. 3
ms)
T
R21
Operating time: 15 ms or less (actual value: approx. 4
ms)
T
R22
Magnetic
Contactor
(DBKM)
BD-N65
(24 VDC)
Mitsubi-
shi Elec-
tric
Corpora-
tion
Time from coil ON to main contact (normally closed)
OFF: 68 ms to 92 ms
T
C1
Time from coil OFF to main contact (normally closed)
ON: 13 ms to 29 ms
T
C2
Sym-
bol
Description
Operating Time
T
D1
Time from when the /DBON signal is turned ON to when the
Magnetic Contactor operates.
T
D1
= T
R11
+ T
C2
T
D2
Time from when the /DBON signal is turned OFF to when the
Magnetic Contactor opens.
T
D2
= T
R12
+ T
C1
T
D3
Time from when the /DBON signal is turned ON to when the
/DBANS signal turns ON.
T
D3
= T
D1
+ T
R21
T
D4
Time from when the /DBON signal is turned OFF to when the
/DBANS signal turns OFF.
T
D4
= T
D2
+ T
R22
Dynamic brake released.
Dynamic brake applied.
Dynamic brake applied.
/DBON
(CN1 output signal)
/DBANS
(CN1 input signal)
T
D2
T
D1
T
D4
T
D3
Dynamic brake operation
requested.
Dynamic brake
operation requested.
Dynamic brake
operation in progress
Dynamic brake
operation in progress
Dynamic brake release
requested.
Dynamic brake
release in progress
Status of
dynamic brake