ProMinent Beta BT4b Operating Instructions Manual page 30

Electrical installation
2
3
4
P_BE_0014_SW
Fig. 8: Pump pin assignments
1
5
P_BE_0015_SW
Fig. 9: Cable conductor assignments
"Pause" function
"External contact" operating mode
"Auxiliary frequency" operating mode
30
Electrical interface for pin 1 "Pause" - pin 2 "External contact" - pin 5 "Aux‐
iliary frequency"
Data
1
Voltage with open contacts
Input resistance
Max. pulse frequency
Minimum pulse duration
5
Control via:
potential-free connection contact (load: 0.5 mA at 5 V) or
n
Semiconductor switch (residual voltage < 0.7 V)
n
Electrical interface for pin 3 "mA output" (identity code characteristic "Con‐
trol variant": 3, 5 and R)
Data
Input apparent ohmic resistance, approx.
The metering pump makes its first metering stroke at approx. 0.4 mA (4.4
1
mA) and starts continuous operation at approx. 19.2 mA.
Pin
2
1
3
2
3
4
4
5
* with identity code characteristic "Control version": 3, 5 and R
The pump does not work if:
the cable is connected and pin 1 and pin 4 are open.
n
The pump works if:
the cable is connected and pin 1 and pin 4 are connected.
n
no cable is connected.
n
The pump performs one or more strokes if:
Pin 2 and pin 4 are connected to each other for at least 20 ms. At the
n
same time, pin 1 and pin 4 must also be connected to each other.
The pump works at a pre-set stroke rate if:
Pin 5 and pin 4 are connected to each other. At the same time, pin 1
n
and pin 4 must also be connected to each other. The auxiliary fre‐
quency is factory-preset to the maximum stroke rate.
1
Function 5-conductor
cable
Pause brown
External contact white
mA output* blue
Earth / GND black
Auxiliary fre‐ grey
quency
Refer to the functional description for the hierarchy of func‐
tions and operating modes.
Value Unit
5 V
10 kΩ
25 pulse/s
20 ms
Value Unit
120 Ω
2-conductor
cable
bridged at pin 4
brown
-
white
-