Sensor / Switch Amplifier

Product details



Switch amplifier - a.c. powered

This isolated barrier is used for intrinsic safety applications. It transfers digital signals (NAMUR sensors/mechanical contacts) from a hazardous area to a safe area.

The proximity sensor or switch controls a form C changeover relay contact for the safe area load. The normal output state can be reversed using switches S1 and S2. Switch S3 is used to enable or disable line fault detection of the field circuit.

During an error condition, the relays revert to their de-energized state and the LEDs indicate the fault according to NAMUR NE44.

Technical specification
Supply voltage:	207-253V a.c.
Input/Output:	Digital input
No. of Channels:	2
Output I, II:	Signal relay
Input:
Rated values:	acc. to EN 60947-5-6 (NAMUR)
Open circuit voltage:	Approx. 8V d.c.
Short circuit current:	Approx. 8mA
Switching frequency:	<10Hz
Ambient temperature:	-20 to +60°C
Protection rating:	IP20
Mounting:	35mm DIN rail or panel mount
Dimensions:	w20 x h119 x d115mm

Features:

3 port galvanic isolation

2-channel isolated barrier

230V a.c. supply

Dry contact or NAMUR inputs

Relay contact output

Line fault detection (LFD)

Reversible mode of operation

Up to SIL2 acc. to IEC 61508/IEC 61511

DIN rail/power rail solutions

Removable terminals reduce maintenance time

Fault detection and local indication