ISC/Oldham OLC20 Series User Manual

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1. Electric power supply
A) Explosion-proof version
Power supply: voltage on detector terminals = 15 V to 30 V
Power consumption: 3-wire version = 100 mA
2-wire version = 25 mA
Load resistance: maximum resistance = 250 ohms
Line length (shielded cable): 3-wire version = 1 km as 3x 1.5 mm
2
(32 ohms in
loop mode)
2-wire version = 4 km as 3x 1.5 mm
2
(32 ohms in
loop mode)
B) Intrinsic safety version
Characteristics of ZENER barrier: 28 V - 300 ohms
Supply voltage for barrier: 19 V to 26 V
Voltage on detector terminals: 10 V to 26 V
Power consumption: 25 mA max
Load resistance: 47 ohms
Line length (shielded cable): 1 km as 3x 1.5 mm
2
(32 ohms in loop mode)
2. Output signal
Source mode current = 4-20 mA
Max. current: 25 mA
Fault current: <1 mA

ISC/Oldham OLC20 Series Specifications

General

Brand	ISC/Oldham
Model	OLC20 Series
Category	Security Sensors
Language	English