Cut Sheet

Photoelectric MP Series Modular
Photoelectric Sensors
608
Singapore: [phone]
[e-mail]
USA: [phone]
[e-mail]
Germany: [phone]
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Pepperl+Fuchs Group
www.pepperl-fuchs.com
Subject to modifications without notice Copyright Pepperl+Fuchs
ANALOG PLUG-IN BASE
RECEPTACLE MODELS
MPB20
Standard 4-terminal, 1/2” NPT conduit thread
MPB22
5-pin mini connector
See pages
803-854 for
cordsets
APPLICATIONCONSIDERATION
The MPF5HD head emits an IR beam, which is bounced off the
detected object and returned. Depending on the distance to
the object and its reflectivity, the head produces a signal with
a magnitude proportional to the sensed distance between the
object and the head. The MPS35 uses this signal to produce a
voltage output and a current output.
The MPS35HD base provides a voltage output from 0-5VDC.
The voltage output sources voltage to the user’s load, which
is then connected to the MPS35HD’s negative supply terminal
or ground. Current flows from the voltage output to ground.
The voltage output can only supply up to 5mA of current and
therefore, the load impedance must be 1000 ohms or more.
Lower impedances will produce false output voltage readings.
The MPS35HD base also provides a current output from 4-20mA.
The user’s load is connected from the MPS35HD’s positive
supply terminal and to the analog current “output” terminal. The
“output” pin sinks current (current flows into it). Output current is
monitoredthroughaninternalresistorinthecurrentamplier.As
the target is moved toward the sense head, increased current is
senttotheloadandtothesenseresistor.Withoutlimitations,this
current would produce voltages across these two resistances
that would exceed the MPS35HD’s supply voltage. Under these
conditions, the output current will reach some value and just stay
there. Therefore, to ensure proper operation of the MPF5HD/
MPS35HD sensor, the current output load resistance cannot
exceed 250 ohms. The current output can only operate with
loads of 0-250 ohms.
The MPF5HD head produces only one output signal from which
the MPS35HD produces its voltage output. The voltage output is
thenusedtorunthecurrentamplierviaaninternalconnection.
There is only one set of range and offset adjustments provided.
These adjust both the voltage and current outputs. Due to
differencesinthetwoampliers,onlyoneoutputcanbeset
accurately. Therefore only one output should be used with the
other left unconnected. Should it be necessary to use both
outputs, the voltage output must see a minimum load resistance
of 5000 ohms. This is necessary to prevent overloading of the
sensor, which could produce incorrect output voltage and
current values.
Specifications
DC
SENSING RANGE
Determined by cable
†
MODEL NUMBER(S) MPS35HD
OUTPUT
Voltage
0-5 VDC
Current
4-20 mA
LOAD CURRENT
5 mA max.
DRIFT
(68ºF to 140ºF) 3% typical
(0 to 68ºF) 6% typical
SHORT CIRCUIT AND
OVERLOAD PROTECTION
No
REVERSE POLARITY PROTECTION
Yes
SUPPLY VOLTAGE
12-24 VDC
POWER CONSUMPTION
≤ 40 mA
REPEATABILITY
± 1% typical
PROTECTION (IEC)
IP69K when all components
are properly assembled
TEMPERATURE
RANGE
WORKING +32 ºF to 140 ºF
STORAGE -67 ºF to 185 ºF
HOUSING MATERIAL
Glass-filled Polysulfone
SHOCK
50 G
VIBRATION
10 G, 10-500 Hz
HUMIDITY
95% RH (non-condensing)
STANDARDS
EN 60947-5-2
APPROVALS
ELECTRICAL CONNECTION
Dependent on
receptacle selected
†
See pages 761-796 for
fiber optic lengths and
specifications.