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120 V AC Design
Input / proximity switches (external initiator: S4 in):
Power supply: voltage present at control head U
Nominal
= 120 V AC, 50/60 Hz
Design: DC 2 and 3-wire,
Normally open contact, L-switching
input current 1-signal: I
Sensor
< 2 mA
Inputs valve actuation (Y1 - Y3):
Signal level - active: U > 60 V AC
Signal level - inactive: U < 20 V AC
Impedance: > 40 kOhm
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