gefran ADV200 User Manual

142 ADV200 • Functions description and parameters list
Opening phase:
Setting of parameters 3172, 3176, 3182, 3184, 3186.
When the drive is in the “Drive ready” and “Start” conditions (following the enable and start commands) the
brake is opened (i.e. the signal corresponding to PAR 3180 Brake control mon, which must in turn be as-
signed to a digital output, is raised) provided a further condition, dened by setting parameters 3182, 3184,
3186, is met once the Speed setpoint (PAR 664, considered as an absolute value) has reached the value set
in PAR 3176 Brake open spd thr.
Parameter 3182 Brake open thr sel is used to establish whether the comparison is to be made with the drive
output current (value 1, Output curr) or with the torque supplied (value 0, “Torque ref%”).
Parameters 3184 Brake open thr and 3186 Brake open thr src are used to dene the value of the threshold
at which the comparison is made (this can also be set via analog input, eldbus, Pad, FastLink…).
If the value of parameter 3182 Brake open thr sel is equal to Output curr, the brake is opened provided one
of the following 3 conditions is met:
• The threshold dened by parameters 3184/3186 is positive, and the value of parameter 250 Output cur-
rent is higher than the threshold.
• The threshold dened by parameters 3184/3186 is negative, and the value of parameter 250 Output cur-
rent is less than the threshold.
• The threshold is zero, therefore the brake is always opened.
If the value of parameter 3182 Brake open thr sel is equal to “Torque ref%”, the brake is opened provided
one of the following 3 conditions is met:
• The threshold dened by parameters 3184/3186 is positive, and the value of parameter 2386 Torque ref %
is higher than the threshold.
• The threshold dened by parameters 3184/3186 is negative, and the value of parameter 2386 Torque ref
% is less than the threshold.
• The threshold is zero, therefore the brake is always opened.
Threshold values are expressed as a percentage and refer to the rated current or torque values of the drive.
Parameter 3172 Brake open delay can be set to dene the delay between the moment the double opening
condition occurs (speed reference + current or torque) and the time the open command is actually sent by the
drive.
If the speed reference condition is met but not the current or torque condition, the drive enters a Brake fault
alarm condition, which can be managed via parameter 4684 Brake fault activity, (set by default to Disable).
Closing phase:
If the drive is disabled (also due to any alarms that are capable of disabling it) the close brake command is sent
immediately, regardless of the operating condition.
For normal closing, set parameters 3174, 3178.
When the brake has been opened, it waits for the “Stop” command, then sends the close command when the
speed reference is less than the value set in parameter 3178 Brake close spd thr. Parameter 3174 Brake
close delay can be used to enter a delay between the moment the closing condition occurs and that in which
the close command is actually sent by the drive. After the closing condition, it is also possible to restart the
drive within the time set in Brake close delay, by sending the normal “Start” command. In that case the timer
is reset and the drive waits for the closing condition again, which starts when a new “Stop” command is sen
In V/f control mode, since there is no precise control of the actual speed and torque, the ‘Speed ref loss’ alarm
is not managed, which means that external controls must be used to detect any possible loss of a suspended
load.
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gefran ADV200 Specifications

General

Brand	gefran
Model	ADV200
Category	Inverter
Language	English