BUSCH COBRA ATEX, Instruction Manual

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5 | Installation
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• Watch the fan wheel of the motor and determine the direction of rotation just before
the fan wheel stops.
If the rotation of the motor must be changed:
• Switch any two of the motor phase wires.
5.7 Electrical Connection of the Monitoring Devices
NOTE
In order to prevent potential nuisance alarms, Busch allows that the control system is
configured with a time delay of 2 seconds.
NOTE
The accessories below are considered as standard.
If other specific components should be used, refer to the instruction manual of the ac-
cessory in question.
5.7.1 Wiring Diagram Resistance Thermometer
Part no.:
PT100: 0651 550 436
Transmitter: 0643 536 800
Supplier reference:
PT100: Albert Balzer AG
ref. TWBa-ADX50XG1/4X90DACB
Transmitter: Hauser
ref. TMT 187-B41FJA
Maintenance procedure:
Procedure A [ ► 29]
P&ID position:
TSA+/0101 “cooling liquid temp.”
TSA+/0102 “exhaust gas temp.”
Wiring with transmitter:
2
1
+
-
1
2
3
4
5
6
+
-
1 = Brown ; 2 = Blue
Wiring without transmitter:
1
2
3
4
1 and 2 = Red ; 3 and 4 = White
Electrical data:
U
i
= 30 VDC ; I
i
= 100 mA ; P
i
= 750 mW ; L
i
= 0 µH ; C
i
= 0 pF
4 ... 20 mA
►
0 ... 300 °C
Warning signal:
A warning signal can be set prior the trip signal.
Trip signal:
T
trip
(TSA+/0101) = 55°C
►
6.93 mA
T
trip
(TSA+/0102) = 80°C
►
8.27 mA