C.M.C. n.v. - Airmaster S1 installation guide – V1.2 – MANY0402A.00
6.6 analog output (optional)
The analog output can be used for the speed control of a variable speed drive with a
4 to 20mA input. It can also be used to repeat analog inputs as 4 to 20mA signals.
Output Voltage(no load) 24VDC
Output Signal
4 to 20mA
Resolution
0,020mA
X06
1
2
4-20mA
500R
ANA_OUT
AGND
Maximum Load
500 ohm
Error
±1% typical, maximum ±5% FS
Connector X06
pin 1
AGND
Analog GND (-)
pin 2
ANA_OUT
Analog output (+)
Can also be used to energize a remote relay with a 24VDC coil and an initial switch on
current
≤
20 mA.
6.7 Communication
There are two communication ports available on the Airmaster S1. One port is optional.
6.7.1 RS485 port1 (standard)
115,2k baud (max.), CMC systems solution protocol
Connector X07
Pin name
Function
1 L1+
RS485
L1+
2 L2-
RS485
L2-
RS485 Cable
2 x 0.5mm² to 1.0mm², twisted pair, earth shielded
UL2092 style or equivalent
RS485 Distance
0.5mm² to 0.75mm²
<= 500m (1650ft) total length
0.75mm² to 1.0mm²
<= 1km (3300ft) total length
6.7.2 RS485 port2 (option)
There is one optional RS485 port 2 with connector located on X08.
Pin name
Function
1 L1+
RS485
L1+
2 L2-
RS485
L2-
RS485 Cable
2 x 0.5mm² to 1.0mm², twisted pair, earth shielded
UL2092 style or equivalent
RS485 Distance
0.5mm² to 0.75mm²
<= 500m (1650ft) total length
0.75mm² to 1.0mm²
<= 1km (3300ft) total length
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