897H-G231 Datasheet, PDF (1/2 Pages) Allen-Bradley – Galvanic Isolator

Hazardous Location & Pneumatic Switches
Galvanic Isolator
APPROVED
Description
The galvanic isolators are active protective interface assemblies to
isolate intrinsically safe circuits from non intrinsically safe circuits to
worldwide standards. Galvanic isolators offer economical solutions
for instrumentation and control systems in hazardous locations.
Unlike zener diode barriers, galvanic isolators do not require
grounding.
Allen-Bradley’s galvanic isolators provide 1500 volt isolation
between hazardous area and non hazardous area terminals and 500
volt isolation between input/output and external power terminals.
DIP switches provide convenient programming for output or
diagnostic functions. Multiple LEDs allow easy visual indication of
module and circuit status.
Wiring for intrinsically safe systems must be identified as such
through the use of light blue jacketing and/or through appropriate
labels. Such labels are required by NEC Article 504 and ANSI/ISA
RP-12.6 to be placed at no more than 25 foot intervals. When
installing intrinsically safe equipment the user should refer to all
relevant national standards and/or those standards set forth by the
“authority having jurisdiction” at the installation site.
Features
• Galvanic isolation input-to-output
• Reverse polarity protected
• 500V isolation between input and output
• No separate intrinsically safe grounding required
• 18mm (0.71in) wide housing
• 35mm Din rail mount
Specifications
Standards
EN50020-EN50039, FM3610, CSA22.2
No.157, UL913
Approvals
FM, CSA, UL, CENELEC (PTB)
approved and CE marked for all
applicable directives
Power Supply
32mA @ 18-35V DC
Number of Inputs
2
Signal Range
8V @ 8.2mA
Input Switching Current
On > 2.1mA
Off < 1.2mA
Input Resistance
1000 ohms
Isolation Protection
1500V
Output
2 x SPST
Output Contact Rating
2A/250V AC, 2A/120V AC, 2A/24V DC
Switching Frequency
15Hz
Switch Delay
On to Off 15ms
Off to On _15ms
Indication LEDs
Green = Power
Yellow = Output Closed
Red = Wire Break/Short
Operating Temperature
-20°C to +65°C (-4°F to +149°F)
Humidity
95% RH
Housing Material
Polyamide 6GF
Enclosure Protection
IP30
Mounting
35mm Din rail
Conductor Size
0.2-2.5mm² (24-14AWG)
Weight
120g (0.26lbs)
Mechanical Contact Life
20,000,000 cycles
Entity Table
Groups
A, B
C, D, E,F, G
Voc
10.6V
Isc
29.7mA
Ca
2.5uF
15uF
La
40mH
150mH
16-6