Function Diagram; Circuit Diagrams; Approvals And Markings; Application - DOLD SAFEMASTER BA 7924.21 Manuel D'utilisation

Installation- / Safety technique
SAFEMASTER
Delay module, Release Delay
BA 7924, IL 7824, IN 7824
BA 7924.21
IL 7824.21

Function Diagram

U
U H
A1/A2
<t v
15-16
27-28

Circuit Diagrams

A1 15 27
A1 15 27
A2 16 28
16 28 A2
M7524
BA 7924.21
BA7924.21/100
All technical data in this list relate to the state at the moment of edition. We reserve the right for
technical improvements and changes at any time.
BA 7924.21/002
IN 7824.21
t
t v
M7523
A1 15 27
A1 15 27
A2
A1
A2 16 28
16 28 A2
BA 7924.21/002
BA 7924.21/003
• According to
- Performance Level (PL) c and category 2 to EN ISO 13849-1
- SIL Claimed Level (SIL CL) 2 to IEC/EN 62061
- Safety Integrity Level (SIL) 2 to IEC/EN 61508
- Category 2 to EN 954-1
• BA 7924.21/002 und BA 7924.21/003
- Performance Level (PL) d and category 3 to EN ISO 13849-1
- SIL Claimed Level (SIL CL) 2 nach IEC/EN 62061
- Safety Integrity Level (SIL) 2 to IEC/EN 61508
- Category 3 to EN 954-1
• Release delay
• Without auxiliary voltage
• Output: 1 NC, 1 NO contacts, forcibly guided
• Operating state display
• Optionally with adjustable or fixed time delay up to 30 s
• Optionally with redundant timing circuit
• Optionally with 1 or 2 separate timing circuits
• Optionally also in housing for distribution board
• Width 45 mm, 35 mm or 52.5 mm

Approvals and Markings

* see variants

Application

• Delayed disconnection with testable switching status of output relays.

Indicators

LED's comes on when A1 / A2 connected to supply

Notes

The output contacts of the two timing circuits are connected in series in
the BA 7924.21/002 and /003 modules. This results in so-called switch-off
redundancy, i.e. the contact path 27-28 is opened reliably after expiry of
the predefined delay time, even if a contact in this path is welded.
A1
A1 A2
15 16
M7525
27 28
15
16 27 28
A2
M7526_a
IL 7824.21
13
*
Canada / USA
A025518
A1
A1 A2
15 16
27 28
15
16 27 28
A2
M7527_a
IN 7824.21
BA 7924, IL 7924, IN 7924 / 21.07.16 en / 741