BA-en-4003-2005_TUE30
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3.2 Terracompact II TCO030
3.2.1 Assembly
The Terracompact II TCO030 must be mounted outside the hazardous
area. Only the intrinsically safe circuit is allowed to lead into the
hazardous area.
The Terracompact II TCO030 is intended for assembly on a standard rail
NS35. Several appliances may be plugged next to each other. Each
Terracompact II unit is laid out for connection to a ground contact maker.
The unit is preferably installed in the switchgear cabinet of a dry control
room.
One power supply TCON01 (see spare parts) may be used to supply two
Terracompact II with an operating voltage of 24 V DC.
3.2.2 Electrical connections
Warning!
The signal contact supply lead and the operating voltage supply leads
must not be allowed to cross the intrinsically safe circuits (blue leads).
Separate cable conduits must be provided for intrinsically safe circuits.
The maximum cable length in the intrinsically safe circuit must not exceed
the maximum rated capacity and inductance (see Technical
Specifications). A potential equalization system (PA) has to be set up
along the complete measuring circuit. The device must always be
connected to an equipotential bond.
Connect the intrinsically safe circuit, i.e. the ground contact makers or the
cable rewinder, to terminals 9, 10, 11 and 12.
Ex!
Ex!
Fig. 8:
Terracompact II
TCO030 with ter-
minal assignment
Z0
014
8y
Terracompact II
1
2
3
4
5
6
–
+
N.O. COM N.C.
45
68
24V DC ±10%
7
8
9
10 11 12
PAL
input Ex i
PAL ZG2
Z2
ZG1
Z1
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