SKF M Series User Manual

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951-150-032-EN
Version 09
EN
3. Overview, functional description
3.2 Design
The universal piston detector
234-13163-9 and the bipolar piston detec-
tor 234-11454-1 are position sensors that,
together with a pressure-resistant adapter,
are screwed into the progressive metering
device.
Through the closed adapter, the sensors
detect the metering device piston without
coming into direct contact with it.
Hydraulic pressure spikes therefore do not
act directly on the front sensor surface of
the piston detectors.
There are different adapters depending
on the progressive metering device series.
These differ in terms of thread size and
clearance. They are specifically tailored to
the respective metering device type and pis-
ton stroke type.
The universal piston detector automatically
detects the customer’s plug/cable assign-
ment, 2-wire design or 3-wire design (with
cable break protection).
The universal piston detector is not suitable
for use in automotive applications with a
KFGS or KFGL lubrication pump due to the
undefined pin assignment. The bipolar pis-
ton detector should be used in this case.
The bipolar piston detector is available only
in a two-wire design. The signal voltage can
be applied to either pin 1 or pin 4.
3.2.1 Functioning
When the piston detector is actuated (piston
stroke), a yellow LED lights up and indicates
correct functioning of the piston detector.
Subsequent replacement of the piston de-
tector during operation is possible in cases
of piston detectors with adapter which have
already been mounted if the corresponding-
ly designed adapter is also mounted. A check
of the adapter version (number of rings) is
to be carried out beforehand in accordance
with Chapter 5.1.
With the corresponding adapter, the piston
detectors are available as replacements for
all previous detectors of the metering device
series PSG1, PSG2, PSG3, VP, VPK, VPB,
SSV, SSVL, SSVD, SSVDL, SSVE, SSVD-E,
SSVC. For the metering device series SSV,
SSVL, SSVD, SSVDL, SSVE, SSVD-E, SSVC,
an adapter cable might also be used, de-
pending on the design.
VPB metering device, stainless
steel version
Due to the material used in the pis-
ton (brass), the piston detectors de-
scribed here are unable to detect the
movement of the piston when a VPB
metering device in the stainless steel
version is used. Instead of the VPB
metering device in the stainless steel
version, please use a corresponding
SSV metering device in the stainless
steel version.

SKF M Series Specifications

General

Brand	SKF
Model	M Series
Category	Security Sensors
Language	English