Installation And Commissioning - S+S Regeltechnik Rheasgard Khssfv Bedienungs- Und Montageanleitung

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Installation and Commissioning

Connection diagram KHSSFV-Modbus
shield
+UB GND A B
1 2 3 4 5 6
ON DIP A
1 2 3 4 5 6 7 8
ON DIP B
1 2 3 4 5 6
ok
err.
7 8 9 10 11 12
GND IN UB
free free free
black green red
Sensor
Note:
To set the internal DIP switches, the
housing cover must be removed.
Top-hat rail housing
To open the housing, insert a screwdriver
(2.0) into the centre of the groove and
press it down. Pull the enclosure cover
forward and hold it.
FUNCTION
The supplied probe with the electronic sensor is firmly connected (see also connection diagram
on housing side) to the top-hat rail housing via a connection cable (KL = approx. 2.4 m)(see also
connection diagram).
The measuring transducer detects the air velocity (0.1...20 m/s) at the sensor.
free
The volume flow is calculated internally from this measured data.
Both parameters can be queried by the BMS via the Modbus.
The integrated start-up override ensures trouble-free start-up (e.g. of the fan) and thus
avoids unwanted fault messages (BMS).
START-UP OVERRIDE
There are application scenarios in which fan motors and measuring instruments are switched
off and on again. When switched on, the fans take a few seconds to build up a flow. During this
start-up time, the BMS could switch to fault mode (lack of flow).
For this reason, a start-up override of 60 s is permanently programmed.
After switching on the supply voltage, a flow of 20 m/s is delivered during this start-up time.
After the start-up time has elapsed, the unit switches to normal measuring mode.
Gehäuse
11
Sonde