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Bircher  |  SKU: ESD3-K167

Bircher Reglomat Safety Relay ESD3-K167 REV. A – Part No. K167 | HOMAG 4-008-32-0967

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Used · tested Removed from a running systemBircher ESD3 Safety Relay – ESD3-K167 REV. A · Part No. K167

HOMAG No. 4-008-32-0967 · 24 V AC/DC · Safety Category 3 · max. 50 ms response time · two-channel monitoring · IP4 protection class

REV. A
Revision
24 V
Supply
≤ 50 ms
Response Time
Category 3
Safety
2-channel
Monitoring
Design Features
Two-channel safety monitoring – Pins 1-4, redundant design for maximum reliability
Safety Category 3 (EN 954-1) – complies with the European Machinery Safety Standard
Response time max. 50 ms – fast, precise reaction to safety-critical signals
24 V AC/DC supply (±10%) – flexible for use with DC and AC voltage
2 safety outputs SR1 + SR2 – SR2 with integrated signaling contact (M), each 2 A / 250 V AC
DIN rail mounting (red snap clip) – easy integration into control cabinets, protection class IP4
Product Description

The Bircher ESD3-K167 REV. A (Part No. K167, HOMAG No. 4-008-32-0967) is an industrial safety relay in the revised Revision A. It monitors safety devices such as safety doors, emergency stop buttons or light barriers in two channels – and safely shuts down the machine within max. 50 ms when triggered.

This device was taken directly from a running system, not overhauled or upgraded, and corresponds to its original delivery condition. It has been electrically tested and is fully functional – ready for immediate use as a direct replacement. Attention: Do not confuse with ESD3-6171 or ESD3-6171-K234 – different pin assignment.

Status LEDs – Meaning of the indicators
Operation Relay switched on and ready for operation – all safety circuits closed
Safety shutdown (1) Channel 1 triggered – e.g. safety door open or emergency stop pressed
Safety shutdown (2) Second safety channel triggered – redundant monitoring active
Fault Internal error or discrepancy between input channels detected
Signal transmitter Fault on the connected signal transmitter – check sensor or switch
Terminal Assignment & Wiring Diagram

Read from the type plate. Please compare with the wiring diagram of your machine before installation – especially the SR2/M wiring.

Pins 1–4 Safety input (2-channel) Safety door, emergency stop or light barrier – Channel 1: Pins 1/2 · Channel 2: Pins 3/4
Pins 5–6 RESET Reactivation after safety trigger (manual or automatic)
Pins 7–8 Signaling contact (M) Status feedback to machine control – integrated into SR2 output
Pins 9–10 Supply voltage Connect 24 V AC/DC ±10%, 50 Hz
Pins 12–13 (SR 1) Safety output 1 Switches off machine circuit 1 – 2 A / 250 V AC, 2 AT internally fused
Pins 15–16 (SR 2 + M) Safety output 2 Switches off machine circuit 2 – 2 A / 250 V AC, 2 AT · SR2 switches together with signaling contact M (Pins 7–8)
Technical Data
Manufacturer Bircher AG, CH-8222 Beringen
Model ESD3-K167 REV. A
Article number K167
HOMAG Number 4-008-32-0967
Supply voltage 24 V AC/DC ±10%, 50 Hz
Response time max. 50 ms
Safety category Category 3 (EN 954-1)
Switching capacity outputs 2 A / 250 V AC (per output)
Internal fusing 2 AT (per output SR1 / SR2)
Signaling contact Pins 7-8 (M) – integrated into SR2 output
Safety outputs SR1: Pins 12/13 · SR2 + M: Pins 15/16
Protection class / Revision IP4 · REV. A
Mounting DIN rail (top-hat rail) – red snap clip
Approvals CE
Condition Used · tested · from a running system
Application Areas
HOMAG Systems Woodworking Safety door monitoring Emergency stop circuits Light barriers Machine safety Industrial automation Safety technology
Article Information
similar HOMAG Spare Part No. 4-008-32-0967
Device type Safety relay for machine safety devices
Origin Directly removed from a running production system
Condition Used · tested · from a running system

The designation "HOMAG" and the HOMAG article number serve exclusively for technical compatibility indication. Third-party brand and product names are the property of their respective owners. Before installation, the wiring diagram of the target system must be checked – the device is only suitable for 24 V AC/DC. Do not confuse with ESD3-6171 or ESD3-6171-K234 (different pin assignment). Installation only by qualified personnel. Illustrations may differ from the scope of delivery.

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