© Munters AB, 2020
11
2
Precautions
CAUTION
Protection provided by the equipment can be impaired if the equipment is used in a
manner not specified by the manufacturer!
CAUTION
There is a risk of explosion if the lithium battery is replaced with an incorrect type. Replace
the battery using the same type and manufacturer only.
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•
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2.1
Grounding
•
Always connect temperature and sensor shields to earth ground.
Avoid mixing high voltage
wiring with sensor and low voltage wiring
.
•
Keep the controller as far as possible from heavy contactor boxes and other sources of
electrical interference
.
•
Do not connect communication wire shields, which go from one house to another at both ends.
Connect them at one end only. Connection at both ends can cause ground loop currents to
flow, which reduce reliability
.
•
The COM connection for communications is not the shield wire. The COM, RX and TX wires
must connect to each other at all controllers
.
2.2
Filtering
If this installation includes a power inverter to drive variable speed fans, install an EMI filter in front of the
inverter, according to the specifications provided by the inverter manufacturer. Refer to the inverter
documentation.
2.3
Checking the Battery Level
Check the battery once a year. The output must be 2.7 volts (minimum). Authorized personnel only must
replace the battery if the output is below the minimum required level or every five years.
2.4
Frequency Inverters
Frequency inverters can cause severe electrical and electromagnetic interference. Therefore, when
employing a frequency inverter, it is critical that you carefully follow the manufacturer's installation
instructions.
In particular verify:
•
That the cable shielding between the inverter and any motor meets industry standards
•
Proper grounding of the inverter's chassis and motor power cable
Summary of Contents for Rotem Trio 20
Page 20: ... Munters AB 2020 20 Figure 6 Relay and port numbering ...
Page 44: ... Munters AB 2020 44 ...
Page 99: ... Munters AB 2020 99 Refer to Tunnel Ventilation page 123 for more details ...
Page 141: ... Munters AB 2020 141 If an outside temperature sensor is enabled map timers to it if required ...
Page 160: ... Munters AB 2020 160 23 3 2TRIO 20 CONTAINER SPARE PARTS ...
Page 162: ... Munters AB 2020 162 23 3 3TRIO 20 DOOR CARDS SPARE PARTS ...
Page 164: ... Munters AB 2020 164 23 3 4TRIO 20 MAIN CONTAINER SPARE PARTS ...
Page 186: ... Munters AB 2020 186 Figure 33 Relay and port numbering 26 2 3POWER Figure 34 Power ports ...
Page 199: ... Munters AB 2020 199 2 Insert and secure the SMA connector ...
Page 202: ... Munters AB 2020 202 example only ...