Weidmuller PTX800A - Configurable counter and totalizer - Handbuch (Seite 38)

8
Alarmchannelsoneandtwo(optional)
Alarm channels one and two have SPDT relay contact outputs. The
rated current decreases for inductive loads so using suppressor
capacitors is recommended. This will also reduce the general level of
electrical noise.
Analogueoutput(optional)
The analogue output provides you with a current or voltage based
signal that is proportional to the rate. The average output value is the
same as the rate, although the instantaneous value may differ slightly
for rapidly changing signals.
Connections
For effective protection from electromagnetic noise, all signal cables
must be shielded, or located on conductive trays or in conduits.
Use 1-8 AWG Cu Wire rated for temperatures above 0 °C Only,
tighten to 4.5 lb-In. Strip wires to  mm from the ends. Use a suitable
ferrule for multistranded wires (do not solder).