Special Connection Instructions; Surge Arrester Function Test - Endress+Hauser iTEMP TMT162 Operating Instructions Manual

iTEMP TMT162
Endress+Hauser
1
2
 9 Shielding and grounding the signal cable at one end with HART® communication
1 Supply unit
2 Grounding point for HART® communication cable shield
3 Grounding of the cable shield at one end
4 Optional grounding of the field device, isolated from cable shielding
5.4

Special connection instructions

If the device is fitted with a surge arrester module, the bus is connected and the power is
supplied via the screw terminals on the surge arrester module.
 10 Electrical connection of surge arrester
5.4.1

Surge arrester function test

NOTICE
To perform the function test on the surge arrester module correctly:
‣
Remove the surge arrester module before performing the test.
‣
To do so, release screws (1) and (2) with a screwdriver as well as securing screw (3)
with an allen key.
‣
The surge arrester module can be lifted off easily.
‣
Perform the function test as shown in the following graphic.
3
Sensor 1
4
5
3
6
S2
-
Bus connection and
supply voltage
4
3
2
1
-
+
4 3
S1
+
+
- -
- +
Wiring
A0010984
A0033027-EN
19