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MIW-RDCV-EN-002 - 27 / 04 / 2017
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9.
Switch on the power supply.
10.
Customise the factory settings to the desired ones via the 3-button interface, the
3SModbus software or Sensistant. For the default factory setting see
Table 1
Adjustable parameters
below.
OPTIONAL MOUNTING INSTRUCTIONS
If your unit is the first or the last on the Modbus RTU network:
If your unit starts or terminates the network (see
Example 1
and
Example 2
), enable
the NBT resistor via 3SModbus or the menu of the controller. If your device is not an
end device, leave the NBT disabled (default Modbus setting).
Example 1
Example 2
Slave 1
RX
ТX
NBT
NBT
NBT
Slave 2
Master
Slave n
Slave 2
Slave 1
RX
ТX
NBT
NBT
Master
Slave n
If the output has to be PWM:
Customise the factory setting for the PWM output (if necessary). By default the PWM
output connection schematic is open collector. To connect the output to an external
voltage source via an external pull-up resistor, see
Fig. 5
PWM connection example
.
Fig. 5 PWM connection example
External supply: 3—50 VDC
Ao
GND
resistor - 10—100 kΩ
VERIFICATION OF INSTALLATION INSTRUCTIONS
When you first switch on the mains supply, the display will show “888” for 2 seconds.
Then, ”20” will appear and the connected EC motor will run at minimum speed.
If this is not the case, check the connections.
Press and hold the up button until you reach the maximum output value ‘100’.
The EC motor will run at maximum speed. Press the
button for 4 seconds until
the display shows a decimal point ‘.’. The RDCV is now in Stand-by mode, the output
is 0, and the motor will stop.
If this is not the case, check the connections.
RDCV
RESIDENTIAL HVAC
CONTROLLER
