8
Parameters
Parameter description
Operating Instructions – Compact Extra-Low Voltage Drives
66
Position with sign in whole revolutions. The total position is always calculated from
whole revolutions and part of a revolution (position P4 = parameters 0x57 and 0x58).
0x59 – Homing speed
The reference travel after switching the
DC 24
V control voltage off/on is performed
with the motor speed parameterized here in revolutions per minute. The value is
signed. When the values are positive, the motor turns in a clockwise rotation; when
the values are negative, it turns in a counterclockwise rotation.
0x5B - Homing offset in digits as part of a revolution
After reaching the reference signal, this value is set as the reference position in parts
of a revolution.
0x5C – Homing offset in whole revolutions
After reaching the reference signal, this value is set as the reference position in whole
revolutions. The total reference position is always calculated from whole revolutions
and part of a revolution (reference position = parameters 0x61 and 0x62)
8.2.1
Digital output "Brake control" (DO1 on Pin 5)
The compact extra-low voltage drive can optionally be supplied with a mechanical
holding brake. In drive configurations with a brake, the procedures for releasing and
applying the brake are controlled internally by the drive controller. The control signal is
generated automatically by an internal logic as a function of the output stage status
and it is additionally issued via the digital output DO1 = OUT1. The brake control sig-
nal DO1 can be evaluated by the user at PIN 5 for diagnostic purposes.
The power supply (current and voltage) for releasing the
DC 24
V brake is provided to-
gether with the control voltage U
DC24V
via PIN 12 and PIN-C. When the brake is re-
leased, approx.
400
mA of coil current flows in addition to the control voltage via PIN
12 of the plug connector. Take this current into account when dimensioning the
DC 24 V power supply unit.
From the user's point of view, the connection assignment and the control of drives with
and without a brake are fundamentally the same. The brake is closed independently of
the user's control if:
•
The DC 24 V control voltage is not applied/fails
•
The DC 48 V voltage supply is not applied/fails
• The internal logic de-energizes the output stage due to a fault detection
26718014/EN – 11/2020
