Speed setpoint
Adjustable between 0 and 100 % of the no-
load speed of the motor by PWM signal or by analogue 0
-10 V signal, depending on the part numbers.
Torque limit
Adjustable between 10 % and 140 % of the nominal motor torque by PWM signal or analogue 0-10 V signal. If the control is at 0 % or 0 V or non-connected, the current limit is 140 %.
If the current in the motor reaches the specified limit, the "active limiting" output switches to the "+ supply voltage" value and the current in the motor is automatically limited.
Since the torque value is directly related to the current in the motor, the torque limit can be set in this way.
Holding torque
Activates if on/off= 1 and speed setpoint= 0.
Its value depends on the "torque limit" setpoint.
Encoder and actual direction of rotation outputs
These two related outputs are used for positioning purposes, using the "high-speed counting" function of a Millenium or other PLC with high-speed inputs (>40 K Hz in order to correctly manage the
"actual direction of rotation" information and to be able to "upcount and downcount" without losing pulses on changing direction).
Overheating protection
If the supply voltage becomes insufficient, the protection activates and shuts off the motor. The motor restarts automatically as soon as the supply voltage returns to the operating range.
Undervoltage protection
If the supply voltage becomes insufficient, the protection activates and shuts off the motor. The motor restarts automatically as soon as the supply voltage returns to the operating range.
Braking
The value of the braking torque is adjustable and is controlled by the "torque limit" setpoint within limits linked to the reduction in the back electromotive force of the motor.
The electronic card includes a (limited) internal device for dissipating braking energy, which limits overvoltages to 40 V. This device is adequate for short braking cycles or if the braking energy is
absorbed by another motor.
Example of usage restriction :
- Braking every 8 seconds of 14.5 10
-4
kg.m
2
from 3000 rpm to 0 rpm.
- Braking every 8 seconds of 25.4 10
-4
kg.m
2
from 2000 rpm to 0 rpm.
- Caution : If the specified limits are exceeded, this device will overheat and destroy the card.
In some cases, overvoltages due to braking must be prevented from returning to the power supply or other equipment (see "braking" in the basic concepts). For connections please refer to the
guide supplied with the card.
Unless otherwise specified, the characteristics given are applicable to all or part of the product range selected
