Guardscan® Light Curtain Control Units
SRUB Control Units
SRUB control units are designed for use with the
Guardscan range of light curtains. This BG-approved interface unit performs the actual switching of the electrical circuit
of the dangerous machine using positively-guided safety relays. It also
incorporates a fail-safe start- and restart- interlock function should the
application require.
The SRUB features a detachable terminal strip which allows for speedy removal of a unit without the need to disturb any wiring.
SRUM/R Control Unit
SRUM/R muting control unit is designed
for use with Guardscan light curtains to provide a fail-safe muting system up to
level 4 of EN954-1. This can safely inhibit the operation of the curtain to
allow material to be automatically loaded and unloaded.
The system discriminates between the material and a person by using two or four mute sensors. The unit can accept volt-free contacts, NPN or PNP
outputs from the mute sensors. The unit contains a drive circuit for an external
"Mute" indication. This lamp is monitored so that- if it does not light, the
system will not go into a muted condition.
SRUS Control Unit
The SRUS control unit is normally used in conjunction with Tapeswitch light curtains to form a complete safety system according to EN6149 type 4 and EN954-1 Cat 4.
The SRUS control unit operates from 24Vdc supply. The unit is housed in a DIN rail mounting enclosure with 16
integral terminals. This unit is intended to be mounted in an existing electrical enclosure on the machine. This existing enclosure must be sealed to minimum rating of IP54. The unit provides auto or monitored-manual reset.
| Technical Specification | SRUB | SRUM/R | SRUS |
| Operating Voltage | 24Vdc +/- 10% | 24Vdc +/- 10% | 24Vdc +/- 10% |
| Power Consumption | Approx. 5VA | Up to 20VA | Approx. 3VA |
| Enclosure Style | DIN 50022 | DIN 50022 | DIN 50022 |
| Enclosure Rating | Terminal IP20 - Housing IP40 | Terminal IP20 - Housing IP40 | Terminal IP20 - Housing IP40 |
| Response Time | 10ms maximum | <20ms (from light curtain input) | 10ms maximum |
| Reset Mode | Auto or fail safe manual | monitored start/restart interlock | Auto or fail safe manual |
| Safety Outputs | 2xN/O safety contacts,(1 N/C aux contact) | 3xN/O safety contacts | 3xN/O, 6A@240V - Positively guided |
| Operating Temperature | -25°C to +50°C | -25°C to +55°C | -25°C to +55°C |
Click on the Control Unit name in the above table to view a printer friendly Information Sheet
(PDF viewer such as Adobe® Acrobat® Reader required).
Tapeswitch Ltd., Unit 38, Drumhead Road, Chorley North
Industrial Park, Chorley, Lancashire, PR6 7BX
Tel: +44 (0)1257 249777 Fax:+44 (0)1257 246600
E-mail:
info@tapeswitch.co.uk
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