iView - Controller View
9-26 Manual # 42-02-7223
Brake - Control Tab - Voltage
The Brake Control tab allows you to set brake operating voltage outputs. Please refer to “Brake
Parameter Adjustments” on page 4-25.
• Pick voltage: Enter the necessary brake Pick voltage (from the job prints) for the brake
used on this job.
• Partial pick voltage: Applied only if a “While doors are closing with motor and partially
picked brake” pre-start sequence is selected. Under this restricted condition, it is only
applied if the motor and brake contactor are picked before the door locks make up. If par-
tial pick voltage is applied, full pick voltage will be applied after the door locks make up
and Speed pick delay 1 expires. Under this scenario, Speed pick delay 2 needs to expire
after full pick voltage is applied before the elevator is allowed to move. When partial pick
voltage is applied, the brake should still apply some pressure on the brake drum.
• Hold voltage: After the brake picks, the brake voltage changes from Pick voltage to Hold
voltage. This is the brake “cooling” voltage. Set Hold voltage = Pick voltage, if not used.
• Relevel voltage: The desired brake releveling voltage. This voltage must be sufficient to
reduce brake pressure so the car can relevel under the brake. On gearless machines it is
important to partially reduce brake pressure, therefore, Relevel voltage should be less than
Pick voltage, usually about 50%. Please refer to “Releveling Operation ” on page 4-34.
• Weakening voltage: Used to smoothly pick the brake when there is rollback. Set Weaken-
ing voltage = Pick voltage, if not used.
Brake - Control Tab - Filter
The Brake > Control tab - Filter section allows you to adjust the filters associated with brake
operation.
• Current low pass frequency: This parameter adjusts the amount of filtering (smoothing)
that is applied to the analog brake current feedback. Generally the default value does not
need to be modified. If a change is required, a reduction of the default value will most
likely be needed.
• Voltage low pass frequency: This parameter adjusts the amount of filtering (smoothing)
that is applied to the analog brake voltage feedback. Generally the default value does not
need to be modified. If a change is required, a reduction of the default value will most
likely be needed.
Brake - Control Tab - Switch
Brake monitoring via an independent contact is required by code only for disc brakes.
• Brake is picked when SP2D or Brake Switch terminal is high: Sets polarity of the brake
contact input.
• Brake is picked when SP2D or Brake Switch terminal is low: Sets polarity of the brake con-
tact input.
• Monitor for brake pick fault: Specifies brake pick fault monitoring via an independent con-
tact. Please refer to the Brake Pick Fault message description(see page 6-16).
• Monitor for brake drop fault: Specifies brake drop switch fault monitoring. Please refer to
the Brake Drop Fault message description(see page 6-15).
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