Nexen RSD250 964260 - Manual (Page 8)

FORM NO. L-21179-D-1108 8
Determine which signal type your machine uses and
set the Rotary Selection Switch.
Table 4
Start Only Signal (momentary)
When the Start/Stopped input signal pulses high, the RSD250 algorithm will begin adapting to account for the
roll’s diameter and inertia. The web must be in motion when this signal goes high otherwise the Adaptive Gain will
increase to maximum. After the machine stops, the RSD250 will continue trying to adapt until the Start/Stopped
input pulses high again and causes the adaptation process to start over.
Encoder (Pulses)
The first time a machine driven encoder pulses the Start/Stopped input, the RSD250 algorithm will begin adapt-
ing to account for the roll’s diameter and inertia. The web must be in motion when this signal goes high otherwise
the Adaptive Gain will increase to maximum. The RSD250 will continue to actively adapt until the encoder pulses
cease for three seconds. At that time, the RSD250 will assume the machine has stopped and the Adaptive Gain
will become to a constant value.
Rotary Switch Position Start/Stopped Signal
1 Start / Stopped (Maintained)
2 Start / Stopped (Momentary)
3 Not Used
4 Not Used
5 Start Only (Momentary)
6 Encoder (Pulses)