Hydrotech MP Series PULSAtron - Manual (Page 21)

21
The pump responds to a straight (non-ratio) 4-20 mA signal as follows: (Figure N below shows straight
response and response ratioed by 25, 50 and 75%):
The pump responds to a 20-4 mA signal as follows. (Figure O below shows straight response and response
ratioed by 25, 50 and 75%):
The signal cord is provided with the pump and has the following polarity:
White = Positive (+)
Black = Common
Signal input impedance is 187 ohms.
OUTPUT RELAY
Each pump has the option of being provided with one of two separate normally open output relay options as
described below. Relays close according to the option selected, and remain closed during the condition specified
for the selected option except for the
Repeat Strokes option.