Emc Suitable Cabling; Terminal Connection; Protection Types - ABB SensyTemp TSP serie Inbetriebnahmeanleitung

4.1.3

EMC suitable cabling

The power supply of the transmitter occurs via the signal cable. A shielding of the cable is not
mandatory for analog transmitters, however, shielded and twisted wires achieve the best
results. For shielded cables, the shielding must be included in the potential equalization within
and outside of the explosion risk area. Unshielded cables may not be run in the area of strong
electrical fields.
For fieldbus applications (PROFIBUS PA, FOUNDATION Fieldbus), the corresponding
instrumentation guidelines for an EMC suitable cabling must be taken into account (e.g.
PROFIBUS PA instrumentation guidelines from the PNO).
4.1.4

Terminal connection

1. The power supply should be securely switched off when making electrical connections.
2. Open the connection head. The connection head may not be opened in an explosive
environment if voltage is present. Observe the cool down time!
3. Connect the positive wire with the terminal on the transmitter labeled with the "+" and the
negative wire with the terminal labeled with the "-". The use of terminal ends (lugs) is
recommended.
4. Establish a ground connection if necessary. Observe the Ex norms for a safe ground
connection.
5. The screws must be tight and a good contact must be ensured.
6. The connection head must be tightly closed (see installation chapter) in order to comply with
the explosion protection requirements. Depending on the explosion protection type, only
approved cable glands may be used.
4.1.5

Protection types

Thermocouples can be used as single or double thermocouples. Resistance thermometers can
be used in 2-, 3-, or 4-wire connection. Only one measurement circuit may be connected for the
protection type EEx i for double measurement elements (z.B. 2 x Pt100). ABB transmitters are
internally switched so that 2 measurement elements may also be connected since both
elements are integrated into the same EEx I sensor circuit. The maximum number of wires in
the plasic-sheathed cable is limited to 6.
Caution – Damage to parts!
The sum of the applied voltage may not exceed 30 V, the sum of the applied currents may not
exceed 32 mA.
Only certified transmitters with the maximum values specified in the instruction manual may be
connected to the temperature sensors. If two transmitters are used for two instrinsically safe
circuits, the sum of the values may not exceed the maximum values specified in the operating
instructions.
CI/TSP-X1 SensyTemp TSP
Electrical connection
EN - 13