ProMinent Beta b BT4b - Relay; Relay Functions

9.4 Relay
9.4.1
Relay functions
Tab. 2: Beta b BT4b/BT5b
Identity code Designation Type Maximum
voltage
Maximum cur‐
rent
Service life, min.
switching opera‐
tions
0 no relay - - - -
1 Fault indicating
relay normally
closed
Changeover
contact
230 V AC 6 A 50,000
3 Fault indicating
relay normally
open
Changeover
contact
230 V AC 6 A 50,000
4 Fault indicating
relay normally
closed
NC 24 V DC 1 A 50,000
Pacing relay nor‐
mally open
NO 24 V DC 100 mA unlimited
5 Fault indicating
relay normally
open
NO 24 V DC 1 A 50,000
Pacing relay nor‐
mally open
NO 24 V DC 100 mA unlimited
A Cut-off relay nor‐
mally closed
NC 24 V DC 1 A 50,000
Warning relay
normally closed
NC 24 V DC 100 mA unlimited
B Cut-off relay nor‐
mally open
NO 24 V DC 1 A 50,000
Warning relay
normally open
NO 24 V DC 100 mA unlimited
With retrofits:
The behaviour of the relays corresponds to identity
code characteristics 1 or 4 – of course, providing
you do not reprogram them.
Tab. 3: Relay type switches with...
Relay type Level
warning
Level
low
Processor
error
Metering stroke
Fault indicating relay: X X X -
Warning relay: X - - -
Pacing relay: - - - X
Cut-off relay: - X X -
Electrical installation
35