Motor Brake Parameters - Hitachi P1 Basic Instruction Manual

MOTOR BRAKE PARAMETERS

While operating in closed loop vector mode (AA121 = 10) the motor brake release and set frequencies are controlled automatically
and typically do not require adjustment.
When operating in open loop mode (AA121 = 1 thru 9) the motor brake release and set frequencies are controlled by parameters that
can be adjusted but typically do not require adjustment.
It is rare for field adjustments to be made for any of these parameters. Please consult Detroit Hoist before adjusting any motor brake
parameters.
When switching between VFD Control Modes (AA121) the internal firmware will automatically assign the AL relay function CC-07 to
the default value listed below. Relay 16 can be used in tandem with AL for added safety by changing VFD parameter CC-06 to the
value set in CC-07 and moving the wire from AL1 to 16A and wiring AL1 to 16C.
IMPORTANT – When switching between VFD Control Modes (AA121) the internal program will automatically assign the AL relay
function CC-07 to the default value listed below it does NOT set CC-06 automatically.
VFD Control Mode
Open Loop
Open Loop
Open Loop
Open Loop
Closed Loop
Closed Loop
Closed Loop
The brake release delay time is used to compensate for delayed brakes and help prevent driving through the motor brake.
The brake set delay time is used to compensate for delayed brakes and help prevent nuisance brake slip detection.
Function
Brake release frequency
Brake set frequency
Brake release delay time
AL relay output function
Brake set delay time
Brake release delay time
AL relay output function
Page 20
Parameter
CE-10
CE-11
UE-25
CC-07
UE-27
UE-28
CC-07
Value
2.50 Hz (default)
2.50 Hz (default)
45 ms (default)
63:LOG2
45 ms
45 ms
62:LOG1