Emergency Stop Safety Relay – Single Channel (RFT148)

$401.00

An Emergency Stop Safety Module is used to increase the control reliability of an emergency stop circuit. The Single-Channel Emergency Stop Safety Relay monitors one single-channel normally closed Emergency Stop switch circuit for a contact failure or wiring fault. When using a single channel emergency stop safety relay, the wiring is monitored and compared. If a failure occurs in one area, it will be detected and a stop signal will be sent to the safeguarded machine or hard guards, to protect personnel from hazardous machinery.

Product Description

An Emergency Stop Safety Module is used to increase the control reliability of an emergency stop circuit. The Single-Channel Emergency Stop Safety Relay monitors one single-channel normally closed Emergency Stop switch circuit for a contact failure or wiring fault. When using a single channel emergency stop safety relay, the wiring is monitored and compared. If a failure occurs in one area, it will be detected and a stop signal will be sent to the safeguarded machine or hard guards, to protect personnel from hazardous machinery.
• Three output switching channels for connection to control-reliable power interrupt circuits
• Auto reset or manual reset
• One auxiliary non-safety N/C output contact for status monitoring by process controller
• Design complies with standards UL991, EN418, and EN954-1 (Safety Category 2)
• For use in functional stop category 0 applications per NFPA 79 and EN418
• 6 amp safety output contacts

A Single-Channel Emergency Stop Safety Relay is designed to connect safety devices, such as interlock switches, to the machine control circuit. It provides a switching action from the safety interlock switch, and can act as an intermediate relay to distribute a signal to multiple devices. The relay compares input and output signals, and provides failure to a safe condition if there is a failure in the interlocking interface control circuit.

The purpose of an Emergency Stop Safety Module (E-Stop Safety Module) is to increase the control reliability of an emergency stop circuit. The ANSI B11.19 standard states:
“Control reliability of electrical, electronic, or pneumatic systems frequently consists of multiple, independent parallel or series circuitry or components so arranged that any single failure … either sends a stop command to the machine tool or prevents a successive cycle from being initiated.”

  • Interlocked guards, light curtains, laser scanners, safety mats
  • Machine input/output signals

WARNING: Not a Stand-Alone Safeguarding Device
This device is not a stand-alone point-of-operation guarding device, as defined by OSHA regulations. It is necessary to install point-of-operation guarding devices, such as safety light screens and/or hard guards, to protect personnel from hazardous machinery. Failure to install point-of-operation guards on hazardous machinery can result in a dangerous condition which could lead to serious injury or death.

rft148-d1

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