3.4.3 Technical instructions
LED:
“Power” ON
Control:
“Ø contr.” flashes until the setting
procedure is complete
Sampling rate:
updating of frequency, 10 Hz
(100 ms)
Detection of
web tear:
ERM offers output signals for roller and
feed stoppage (f < 3 Hz), which are
evaluated and possibly identified as web
tear by a machine controller.
Terminal 14: voltage if roller speed
frequency < 3 Hz
Terminal 15: voltage if feed rate
frequency < 3 Hz
see jumper position
* measured on PIN 17, 18.
Compensation
of friction:
With minor traction, installation friction
may be relatively high compared to the
brake torque needed. This must be
considered when calculating the brake
torque.
Determination
of potentiometer
voltage for the
friction factor:
The friction factor is the result of the
relation between friction torque and
nominal torque and is expressed as
voltage value and set by an additional
potentiometer at terminal 8.
Operating modes
Electronic control unit ERM
6057 758 101 - 2005-02
32
friction torque
U
terminal 8
= ______________ * 10
nominal torque
