Zone 1 (20) - ABB TTF350 Instrucciones Para La Puesta En Funcionamiento

Electrical connection
4.5.4

Zone 1 (20)

Transmitter design: II 2G (1D) EEx [iaD] ib IIC T6
Zone 0, Zone 1,
Fig. 13
A Sensor
B TTF350 transmitter
The input for the power supply must be at a minimum in EEx ib design.
The sensor must be used by the user in accordance with applicable ignition-protection
standards. It can be installed in zone 0, zone 1 or zone 20. For zone 0 and zone 20, the circuit
must be in "ia" design.
22 - EN
Zone 20
ia
J
A
Explosion-protection zone 1
D
ia
B
C Power supply [EEx ib]
D HMI interface for LCD display
TTF350
Safety area
ib
ib
C
A00128
CI/TTF350-X1