Instruction Manual
D104234X012
GH04148 Proximity Switch
October 2019
2
Table 1. Specifications
Equipment Ratings
Operating Ambient Temperature Range:
-40°C to
85°C (-40 to 185°F)
Maximum Altitude:
2000 m (6562 feet)
Contact Electrical Ratings
1 amp resistive, 0.5 amp inductive at 28 VDC
“Contacts” are not polarity sensitive
A bi-directional transient voltage suppressor (TVS)
rated at a clamping voltage of 59 V protects each
Solid State Switch from electrostatic discharge (ESD)
and inductive back-EMF. An additional such TVS is
installed across the NC to NO connections. The TVS
has a reverse standoff voltage of 33 V, so
misapplication of the switch in a circuit with voltage
above the 28 VDC rating could result in conduction
across an “open” set of switch leads.
Switch behavior during inadequate supply power
conditions for the electronic:
both switches in the
open state
Process Seal
Single Seal
Internal O-ring material:
see Construction Materials
Maximum seal pressure:
6.9 bar (100 psi)
Seal temperature range:
-40 to 204°C (-40 to 400°F)
The switch is not exposed to process fluids during
normal operation.
Electrical Connections
Electrical 1/2-14 NPT external conduit connection
with 0.5 m (greater than 18 inches) of 18 AWG lead
wires. Install conduit seal within 18 inches.
Safety ground wire is 16 AWG
Wire Color
Circuit Description
White/Red
DC
White/Black
DC Supply
–
Red
Normally Closed Contact
Brown
Common Contact
Blue
Normally Open Contact
Green
Ground (Housing, Safety)
Insulation Requirements:
Should be consistent with
switched equipment rating and power supply rating,
as well as local code wiring requirements.
Power Requirements for Electronics
Excitation Voltage Range for Electronics:
9 - 30 VDC
Maximum Input Voltage Ripple:
400 mV
Current Draw
Steady state
: Less than 15 mA
Transient (startup or switching)
: Less than 500 mA
peak
Maximum quiescent steady state power draw
of electronics during normal operation within
design parameters:
Pmax_quiescent: 450 mW
Maximum transient power draw of electronics
during normal operation within design parameters:
Pmax_transient:
15 W
The supply terminals are protected against reverse
polarity.
With excessive voltage present on the supply
terminals, a protective bi-directional TVS will
conduct.
The guaranteed standoff voltage of the TVS is 26 V.
Breakdown occurs between 21.9 and 31.9 V.
Clamping Voltage is 42.1 V.
Peak Pulse Power rating is 5000 W.
A common-mode choke protects against conducted
EMI.
Construction Materials
Switch body & cover:
Aluminum 6061 T6, chromate
conversion coated
Internal O-ring:
Fluorosilicone rubber
-continued-
