External Control" Terminal - ProMinent DULCO flex Control Operating Instructions Manual

Installation, electrical
Configured as an output

9.2.2 "External control" terminal

2
3
4
P_BE_0014_SW
Fig. 12: Assignment on pump
32
Tab. 3: Control via:
Switching element
potential-free contact
Semiconductor switch
Parameter
Max. pulse frequency
Min. pulse duration
Tab. 4
Switching element
NPN output (Open Drain)
The "external control" terminal is a 5-pole panel terminal. It is compatible
with 2- and 4-pin cables.
Only use a 5-pin cable with the "Auxiliary capacity" and "mA input" func‐
tions.
Electrical interface for pin 1 "Pause" - pin 2 "External contact" - pin 5 "Aux‐
iliary capacity"
Data
1
Voltage with open contacts
Input resistance
Max. pulse frequency
5 Min. pulse duration
Control via:
potential-free contact (load: 0.5 mA at 5 V) or
n
semiconductor switch (residual voltage < 0.7 V)
n
Electrical interface for pin 3 "mA input" (with identity code characteristic
"Control version": 2 and 3)
Data
Input load, approx.
1 The metering pump starts running at approx. 0.4 mA (4.4 mA) and rea‐
ches maximum capacity at approx. 19.6 mA.
Specification
30 V max. voltage and 300 mA
max. current load per pin
CAUTION!
No protection provided for inductive loads.
– Provide a free-running diode when controlling a
delay.
1
Specification
Load: 0.5 mA at 5 V
Residual voltage < 2 V
Value
50 pulses/s
10 ms
Value Unit
5 V
10 kΩ
25 pulse/s
20 ms
Value Unit
120 Ω