Specifications

Compact Hydraulic Cylinders
Series CHE
Catalog HY08-M1137-3/NA
17
www.millerfluidpower.com
Miller Fluid Power
Des Plaines, IL
Milton, Ontario Canada
Reed Switches / Wiring Connection
4
1 3
Reed Switch – Wiring Connection
Flying Lead or 8 mm Connector
1
Pin Wire Function
1 Brown
Operating
Voltage (+V)
4 Black Not Used
3 Blue
Output Signal
(-V or Ground)
12 mm Connector
2
2
4
13
Pin Wire Function
1 Brown
Operating
Voltage (+V)
2
2
White Not Used
3 Blue
Output Signal
(-V or Ground)
4 Black Not Used
Global Drop-In Reed Switches
(Recommended for longer life 120 VAC)
Put a resistor and capacitor in parallel with the load. Select the
resistor and capacitor according to the load.
Typical Example:
CR: Relay coil (under 2W coil rating)
R: Resistor 1 K
 - 5 K, 1/4 W
C: Capacitor 0.1
F, 600 V
Put Diode parallel to loads following polarity as shown below.
D: Diode: select a Diode with the breakdown voltage and current rating
according to the load.
Typical Example—100 Volt, 1 Amp Diode
CR: Relay coil (under 0.5W coil rating)
Circuit for Switching Contact Protection (Inductive Loads)
(Required for proper operation 24V DC)
Caution
– Use an ampmeter to test reed switch current. Testing devices such
as incandescent light bulbs may subject the reed sensor to high
in-rush loads.
– NOTE: When checking an unpowered reed switch for continuity with
a digital ohmmeter the resistance reading will change from infinity to
a very large resistance (2 M ohm) when the sensor is activated. This
is due to the presence of a diode in the reed switch.
– Anti-magnetic shielding is recommended for reed switches exposed
to high external RF or magnetic fields.
– The magnetic field strength of the piston magnet is designed to
operate with our switches. Other manufacturers’ switches may not
operate correctly in conjunction with these magnets.
– Use relay coils for reed switch contact protection.
Load
Brown
Blue
DC
D
R
Brown
Blue
C
AC
Load
– The operation of some 120 VAC PLC’s (especially some older Allen-
Bradley PLC’s) can overload the reed switch. The switch may fail to
release after the piston magnet has passed. This problem may be
corrected by the placement of a 700 to 1K OHM resistor between the
switch and the PLC input terminal. Consult the manufacturer of the
PLC for appropriate circuit.
– Switches with long wire leads (greater than 15 feet) can cause
capacitance build-up and sticking will result. Attach a resistor in
series with the reed switches (the resistor should be installed as
close as possible to the switches). The resistor should be selected
such that R (ohms) >E/0.3.
– Global reed switch outputs may be influenced by an external
magnetic field. Care must be taken to avoid external magnetic field
exposure.
Wiring Reed Switch
3m Flying Leads P8S-GRFLX
10m Flying Leads P8S-GRFTX
0.3m Lead with 8mm Connector P8S-GRSHX
0.3m Lead with 12mm Connector
P8S-GRMHX
1m Lead with 8mm Connector P8S-GRSCX
2
Pin 2 not present.
6.1
4.3
14
Sensing Face Center
31.5
L = 300
36
M8x1
Specifications
Type..............................................2-Wire Reed
Output Function ............................Normally Open
Operating Voltage.........................10 - 120 VAC
1
10 - 30 VDC
Switching Power ...........................6 W/VA
Continuous Current ......................100 mA max.
Response Sensitivity ....................30 Gauss min.
Switching Frequency ....................400 Hz
Voltage Drop.................................2.5 V max.
Ripple ...........................................10% of Operating Voltage
Hysteresis .....................................1.5 mm max.
Repeatability .................................0.2 mm max.
EMC ..............................................EN 60 947-5-2
Reverse Polarity Protection ..........Yes
Enclosure Rating ..........................IP 68
Shock and Vibration Stress ..........30g, 11 ms, 10 to 55 Hz, 1 mm
Operating Temperature Range.....-25°C to +75°C (-13°F to 167°F)
Housing Material...........................PA 12, Black
Connector Cable...........................PVC
Connector .....................................PUR cable with 8 or
12 mm connector
1
8mm connector rated for 50 VAC max.
Global Reed Switch output may be influenced by external magnetic fields.
Care must be taken to avoid external magnetic field exposure.