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UNIFREM v.3.41x
10 May 2017
Page 102 from 180
Name [ID]
Description
Def.
inactive
[530]
lower than the defined level.
-
÷
-
Opt. meas.
signal [279]
Selection of a signal that is used to allow the measurement and the next
optimization step.
-
Signal
Allows to set the conditions, under which the Optimization signal ( Opt. signal [80] (page 100))
is stable and not burdened with different errors.
Opt. meas.
active [160]
Measurement of the next optimization step occurs after satisfying the selected
condition.
-
-
÷
-
Opt. meas.
inactive
[531]
Optimization measurement deactivation: In case of a numeric signal if the signal
value is lower than the defined level.
-
-
÷
-
7.7.5 MECHANICAL BRAKE
Group of parameters number [517]
Parameters for activation and operation conditions of motor mechanical brake.
MENU \ SETTINGS \ FUNCTIONS \ MECHANICAL BRAKE
Name [ID]
Description
Def.
Mechanical
brake [518]
Turning on the control of the motor mechanical brake. It may have an influence on
the frequency setpoint value and on command generation for the brake control
Converter state [76] (page 23), bit "Mech. brake". For correct operation of the
mechanical brake, it is necessary to choose the "Brake" in relay settings.
Turned
off
Turned off
Mechanical brake control is turned off.
Standard
Mechanical brake control is turned on.
Lift
Control of the mechanical brake for lift drives is turned on.
Brake
delay
[519]
Delay for the RELAY Brake switch command after the START command.
0,01 s
0,00
s
÷
100,00 s
From experience, it is set to 0s, because the brake itself and its contactor have their delays.
Brake
reaction [520]
Brake reaction time after the RELAY switch.
0,20 s
0,00
s
÷
100,00 s
Equals the brake reaction time from the control relay switch to the actual mechanical release.
If this time is set to a shorter than the real time, torque current saturation can occur during the
start and after the brake release, recoils and mechanical bumps to the system can occur.
Brake
advance [521]
Advance time of the RELAY brake switch-off after reaching the frequency Brake
frequency [522] (page 102) in STOP before turning the motor off.
0,20 s
0,00
s
÷
100,00 s
By setting this parameter, it is possible to eliminate the time until the mechanical brake safely
stops the drive to prevent unwanted rotation of the shaft during the drive stop.
Brake
frequency
[522]
Frequency, below which the brake is active.
2,0 Hz
0
,0 ÷
Helps to achieve enough starting torque during the brake release, mainly in the V/f control. In
a closed operation mode and a vector operating mode, it is recommended to set it to 0.0Hz.
7.7.6 LIFTING FUNCTIONS
Group of parameters number [1067]
Setting the parameters that are used mostly on lifting applications.
MENU \ SETTINGS \ FUNCTIONS \ LIFTING FUNCTIONS
Name [ID]
Description
Def.
Load.
signal
[843]
Selection of the parameter that will be used as a calculation source for the load Load [854]
(page 22) quantity value.
-
Signal
In most cases, the signal to calculate the quantity Load [854] (page 22) and to evaluate the OPS
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