ProMinent Beta BT4b - 7.2.2 Level Switch Terminal; 7.3.1 Fault Indicating Relay Output (Identity Code 1 + 3 or 4 + 5)

7.2.2 "Level Switch" Terminal
A 2-stage level switch with pre-warning and end switch-off can be
connected.
Electrical interface
Specification Value Unit
Voltage with open contacts 5 V
Input resistance 10 kΩ
Activation via
n zero volt connection contact (load
: 0.5 mA at 5 V) or
n semi-conductor switch (residual voltage < 0.7 V)
Pin Function 3-wire cable
1 Ground mass black
2 Minimum pre-
warning
blue
3 Minimum end
switch-off
brown
7.3 Relays
7.3.1
"Fault Indicating Relay" Output (Identity Code 1 + 3 or 4 + 5)
A fault indicating relay can be ordered as an option -
refer to Ordering
Information in the Appendix. It is used to emit a signal when there is
a fault with the pump and with "Liquid level low, stage 1" warning alert
and "Liquid level low stage 2" fault alert.
A cut-off relay works when there are fault alerts from the pump and
in the event of the "Liquid level low stage 2" fault alert.
The fault indicating relay can be retrofitted and is operational once
attached to the relay board - refer to "Retrofitting Relays" in the
Appendix.
Electrical interface
Specification Value Unit
Maximum contact load at 230 V and
50/60 Hz:
8 A
Minimum mechanical lifespan: 200 000 Switching
cycles
3
21
P_BE_0016_SW
Fig. 7: Assignment on the pump
3
12
P_BE_0017_SW
Fig. 8: Assignment on the cable
2
3
1
4
P_BE_0019_SW
Fig. 9: Assignment on the pump
Electrical Installation
23