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MIW-RMFPX-2R-EN-000 - 23 / 04 / 2018
8 - 11
OPERATING INSTRUCTIONS
Calibration procedure:
No relative humidity and temperature sensor calibration is necessary.
By default, the CO
2
sensor element is self-calibrating.
Optionally, the CO
2
sensor element can be calibrated and verified manually via
SSCDM. For this purpose, the CO
2
sensor element is removable.
More information is available in the SSCDM datasheet and mounting and operating
instructions.
Bootloader
Thanks to the bootloader functionality, the sensor firmware can be updated via
Modbus RTU communication. To enter ‘Boot mode”, put a jumper onto pins 3 and
4 of the P1 header and restart the power supply (see
Fig. 5
). Once ‘Boot mode’ is
activated, the firmware can be updated via SM Boot application (part of 3SModbus
software suite) or Sensistant.
Fig. 5 P1 header
1 2 3 4 5
Put a jumper onto pins 1 and 2 and wait
for at least 5 seconds to reset the Modbus
communication parameters
1 2 3 4 5
Put a jumper onto pins 3 and 4 and restart
the supply to enter bootloader mode
LED indications
1.
When the green LED is on, the measured value (temperature, relative humidity or
CO
2
) is between the minimum and maximum alert range values (
Fig. 6 - 1
).
2.
When the yellow LED is on, the measured value (temperature, relative humidity
or CO
2
) is in the alert range (
Fig. 6 - 2
).
3.
When the red LED is on, the measured value (temperature, relative humidity or
CO
2
) is below the minimum measurement range value or above the maximum
value. Blinking red LED indicates loss of communication with a sensor (
Fig. 6 - 3
).
Fig. 6 LED indications
3
2
1
NOTE
By default, the LED indication refers to temperature measurements. This can be
changed to relative humidity or CO
2
values via Modbus Holding Register 26 (see
Table
Holding registers
below
).
Ambient light sensor
The measured light intensity in luxes is available in Input Register 5. Additionally,
an active and standby level can be defined in Holding registers 34 and 35. Input
RMFPX-2R
MULTIFUNCTIONAL
ROOM CONTROLLER
