The SCB-02: Universal Safety Timer with 2 Relay Contacts

The SCB-02 is a flexible, tamper-proof timer that meets the highest safety requirements. With 2 secure relay contacts, it ensures reliable and safe shutdown of machines and systems in hazardous situations. This safety timer is suitable for monitoring emergency stop, sliding guard doors, light grids, interlocks, and combustion plants. The SCB-02 supports both stop category 0 and stop category 1.

The outputs of the SCB-02 can be configured to switch with on-delay, off-delay, or without delay. This configuration is made easily via a push/rotary button directly on the device. The integrated display enables secure and precise time parameterization without the need for external tools.

The SCB-02 series replaces older pneumatic time relays and offers a space-saving solution thanks to its compact design. It is available with plug-in screw terminals or push-in spring connections (TWIN version), ensuring easy installation.

Technical Data:

• Safety function: Emergency stop monitoring, sliding guard door monitoring, light grid monitoring, interlocks, combustion plants, stop category 0/1
• Certifications: EN ISO 13849-1:2015, EN 50156-1:2015, EN 62061:2005 + AC:2010 + A1:2013 + A2:2015, IEC 61508, IEC 61511-1:2016, EN 746-2:2010
• Approvals: CE, TÜV, cULus
• Power supply: DC 24 V (+10 % / -15 %)
• Number of secure outputs: 2 (relay contacts)
• Switching capacity of relay contacts: AC-15: 3 A / 250 V; DC-13: 2 A / 24 V
• Number of semiconductor signal outputs: 0 (Option SCB-02-01: 2 inverted signal outputs)
• Switching capacity of each signal output: C1: UB / 500 mA; PNP; short-circuit proof, C2: UB / 50 mA; PNP; short-circuit proof
• Time range: 0-99 seconds (SCB-02), 0-99 minutes (SCB-02m), 0-99 hours (SCB-02h)
• Number of non-delayed outputs: 2 (depending on configuration Pr 00 - Pr 02)
• Number of delayed outputs: 2 (depending on configuration Pr 00 - Pr 02)
• Number of secure inputs: 1 x 2-channel
• Start behavior: Automatic start or manual, monitored start
• PL; Cat.; SILCL (EN ISO 13849-1; EN/IEC 62061): PL e; Cat. 4; SILCL 3
• Dimensions: 22.5 x 99 x 118 mm
• Connection: Screw terminals or push-in spring connection (TWIN version)

Scope of Delivery:

• SCB-02 timer (depending on model with plug-in screw terminals or push-in spring connection)

Accessories:

• Power supply ZPower (Order No.: 471280, input: AC 100–240V, output: DC 24V)

Order Numbers:

• SCB-02 / SCB-02-01 (2 relay contacts, 0-99 seconds): 474490 / 474495 (inverted signal outputs)
• SCB-02 / SCB-02-01 (2 relay contacts, 0-99 minutes): 474491 / 474496 (inverted signal outputs)
• SCB-02 / SCB-02-01 (2 relay contacts, 0-99 hours): 474492 / 474497 (inverted signal outputs)
• SCB-02 / SCB-02-01 (Push-in connection, 0-99 seconds): 475490 / 475495 (inverted signal outputs)
• SCB-02 / SCB-02-01 (Push-in connection, 0-99 minutes): 475491 / 475496 (inverted signal outputs)
• SCB-02 / SCB-02-01 (Push-in connection, 0-99 hours): 475492 / 475497 (inverted signal outputs)