User Manual

15
Siemens CE1N4581en
Smart Infrastructure 2020-07-09
SAS81.33, SAS81.33U
N1
SN
SP
AC/DC 24 V
Y1
Y2
G0
G
F1
A Actuator REF Reference line (Modbus RTU)
F1 Temperature limiter SN System zero
F2 Frost protection thermostat; terminals:
1 – 2 Frost hazard / sensor is Off (thermostat closes
upon frost)
1 – 3 normal operation
SP System potential AC/DC 24 V
F3 Thermal reset limit thermostat U Position feedback
F4
Frost protection monitor with 0…1000 Ω signal output,
does NOT support QAF21.. or QAF61..
Y Positioning signal
G System potential (SP) Y1, Y2 Positioning signals
G0 Sytem neutral (SN) Z Control signal forced control
L Phase 21 Fail-safe function
M Measuring neutral + Bus + (Modbus RTU)
N Neutral - Bus - (Modbus RTU)
N1 Controller