Datasheet
Electronic monitoring relays PMDsrange
Pilz GmbH & Co. KG, Felix-Wankel-Straße 2, 73760 Ostfildern, Germany
Telephone: +49 711 3409-0, Telefax: +49 711 3409-133, E-Mail: pilz.gmbh@pilz.de
True power monitoring
S1WP
1001903-EN-03-2015-07
Altdaten CMT
True power converter for single and
three-phase supplies, used to meas-
ure and monitor the rated power or
true power on electrical machines.
Approvals
Zulassungen
Unit features
Altdaten CMT
9 different measuring ranges
Large voltage measuring range
Analogue output can be switched
for current and voltage
Relay output for monitoring under-
load or overload
Suitable for use with frequency-
controlled motors
Suitable for current transformers
Description
The true power converter is enclosed
in a 22.5 mm S-95 housing. 4 versions
are available for different voltage
measuring ranges, 2 versions are
available for different current measur-
ing ranges and 2 versions are available
for a separate supply voltage.
Features:
Relay output:
1 auxiliary contact (C/O)
Versions with 9 A and 18 A current
measuring range
Fast, analogue reaction time
Adjustable switching threshold for
underload or overload, from 5 to
100 % of the measuring range limit
value
Switching hysteresis of 15 %
Adjustable monitoring reaction time
Adjustable start-up suppression
time
LEDs for supply voltage and status
of auxiliary contacts, underload or
overload
The S1WP monitors the set upper and
lower true power limit on a single or
three phase supply. It converts the
true power or rated power into an ana-
logue output signal, which is propor-
tional to the true power. The analogue
output signal and the status of thresh-
old monitoring are displayed at a relay
output.
The S1WP operates in normally ener-
gised mode, so in its default state con-
tact 11-14 is closed and contact 11-12
open. If normally de-energised mode
is required, the functions of the upper
and lower threshold are transposed. In
overload (UL) mode, if the measured
true power exceeds the switching
threshold, the auxiliary contact switch-
es and the "FLT" LED is lit. In under-
load (LL) mode, if the measured true
power drops below the switching
threshold, the auxiliary contact switch-
es and the "FLT" LED is lit.
The measurement is suppressed dur-
ing the machine's start-up phase, in
order to avoid spurious output signals.
The start-up suppression time t
s
is ad-
justable. In the case of transient load
fluctuations, the switching threshold
can be suppressed. The reaction time
t
r
is adjustable.
S1WP