6
Startup
Operating modes
Operating Instructions – Compact Extra-Low Voltage Drives
44
Speed selection
Function
Description
IN 2 (pin 4)
0
Setpoint A1/N4
If parameter N4 > 0: Fixed
speed N4 active, otherwise
analog setpoint A1 active.
1
Setpoint N2
Fixed speed N2 active.
Description of the control signals
Enable "Clockwise rotation" (IN A on Pin 1)
The "Clockwise rotation" control signal enables the motor. The drive accelerates to the
parameterized setpoint speed with the parameterized ramp. The shaft of the motor
turns clockwise (CW). Depending on the design and number of gear unit stages, the
output shaft of the gear unit can also run in a counterclockwise direction.
Enable "Counterclockwise rotation" (IN B on Pin 2)
The "Counterclockwise rotation" control signal enables the motor. The drive acceler-
ates to the parameterized setpoint speed with the parameterized ramp. The shaft of
the motor turns counterclockwise (CCW). Depending on the design and number of
gear unit stages, the output shaft of the gear unit can also run in a clockwise direction.
Stop and position hold control (IN A and IN B)
If control signal 0 is applied at both inputs, the enabled motor decelerates to speed 0
with the parameterized deceleration ramp. After reaching speed 0, the output stage is
disabled. When the output stage is disabled, there is no current supply and the drive
can be moved via external torque. For drives with optional holding brake, the brake is
applied when the output stage is disabled and thus acts against the external torque. If
control signal 1 is applied at both inputs, the positioning mode is activated. The behav-
ior of the drive is now determined by the status of input IN 1 and the current position.
The optional brake remains permanently released in this status.
Trigger for relative distance (IN 1 on Pin 3)
If the positioning mode is active
(IN
A and
IN B =
1), input
IN
1 serves as a trigger for
the start of the relative distance. With a rising edge, the drive is positioned to the value
"Current po relative distance". If additional triggers are set during the current
positioning procedure (rising edges at IN 1), the relative distance multiplies by the
number of trigger signals to an X-fold relative distance. After reaching the calculated
target position, the position hold control mode is automatically activated. In the case of
position hold control, the drive continues to be supplied with current and also thermally
loaded in an idle state.
Speed setpoints (IN 2 on Pin 4)
2 different speed setpoints are available. Control occurs via binary input
IN
2. If a con-
trol signal is not applied
(IN 2 =
0), the fixed setpoint N4 or the analog setpoint
(0
–
10
V) is activated depending on the parameter setting. If parameter N4 has a value
greater than 0
(N4 >
0), this value has priority. If parameter
N4 =
0, the voltage value
at the analog input determines the setpoint speed. If a control signal is applied
(IN 2 =
1), the fixed setpoint N2 is activated. The setpoint speed selection described
here applies to all of the movements in the "Positioning" operating mode.
26718014/EN – 11/2020
