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MIW-AH2A1-6-EN-000 - 18 / 11 / 2019
5 - 10
WIRING AND CONNECTIONS
L
Power supply (230 VAC or 400 VAC)
N
Neutral
PE
Protective earth
N
Load output for heater
H
Ao1
Analogue output (for connecting another slave device, e.g. AH2A1
or fan speed controller, repeating the analogue input signal from
the master)
GND
Common ground for analogue input and analogue output
Ai1
Analogue input - temperature setpoint reference
NO
Input - normally open contact for remote ON / OFF switching
GND
GND for NO and NC input contacts
NC
Input - normally closed contact for remote ON / OFF switching
/B
Modbus RTU (RS485) communication, signal /B
A
Modbus RTU (RS485) communication, signal A
GND
Modbus RTU (RS485), ground
OPERATIONAL DIAGRAMS
Slave mode
Regulated output
(PWM)
PWM
Time
Temperature SP
t°
Analogue output
Analogue input
0 %
100 %
100 %
Temperature SP
5 °C
Analogue input
0 %
30 °C
100 %
MOUNTING INSTRUCTIONS IN STEPS
Before you start mounting AH2A1-6, read carefully
“Safety and Precautions”
.
Choose a smooth surface for installation (e.g. a wall, a panel, etc.).
ATTENTION
Before mounting the device switch off the mains supply!
Follow these steps:
1.
Unscrew the cover and open the controller. Mind the ribbon that connects the two
printed circuit boards.
2.
Insert the high voltage cables through the grommets and connect them according
to the wiring diagram.
AH2A1-6
ELECTRONIC HEATING
CONTROLLER