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Home Line Card Products Relays Safety Relays Light Barrier Controllers

Light Barrier Controllers feed

DOLD light barrier controlers


Light barriers belong to electro-sensitive protective equipment (ESPE) which cut off dangerous movements and initiate a safe condition when persons or objects approach to a dangerous location


  • Increase productivity by longer cycle times without loss of safety
  • No need for mechanical safety devices
  • Easy implementation of muting functions


The electro-sensitive protective equipment BWS-S, also referred to as type 4, is not affected by a farlure within the electro-sensitive protective equipment. Our solutions for this include:

  • Type-tested evaluation circuits in compliance with relevant norms
  • Prewired rail-mounted modules, also with muting function



Protection of operators on machinery who have to cyclically intervene in the process (dangerous area), e.g. loading and removal of process material/products.

A typical application is the operation of presses.

Light curtaine control modules SAFEMASTER ®
All products mentioned comply with the safety category 4 acc. to EN 954.
Function Safety category
according to EN 954
Output contacts;
Nominal voltage
UN 24 V DC
Breaking current
Ith [A] max.

Light curtain controller 4 1; 2 3NO, 1NC + 5 A + 22.5 LG 5925/900
Light curtain controller 4 1; 2 3NO, 1NC + 7 A + 22.5 BG 5925/900
Light curtain controller 4 2 2NO, 1NC + 6 A
45 BD 5939
Light curtain controller 4 2 3NO + 5 A + 45 BH 5902_01MF2
NO = normally open contact, NC = normally closed contact
For multiple monitored light barriers in combination with further safety functions see SAFEMASTER®C and SAFEMASTER®M

Sort by:
Name Code Image Description Data
BG5925/900 D BG 5925/900 BG5925/900
Light curtain controller BG 5925/900, Output: max. 3 NO contacts, see contacts, Single and 2-channel operation, Line fault detection on On-button, Manual restart or automatic restart, switch S2 download
BH5902/01MF2 D BH 5902/01MF2 BH5902/01MF2
Light curtain controller with selectable operating modes BH 5902/01MF2 download
LG5925/900 D LG 5925/900 LG5925/900
Light curtain controller LG 5925/900, For light curtains with symmetric or asymmetric outputs adjustment with switch S1, Output: max. 4 NO contacts, see contacts, Single and 2-channel operation, Line fault detection on On-button download

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