Siemens SITRANS TH400, Operating Instructions Manual

Page: 51 / 62

Appendix
A.2 Control drawing
SITRANS TH400
Operating Instructions, 06/2010, A5E01018688-02
51
Non-hazardous Location
Hazardous (Classified) Location
Class I,Division2, Groups, A,B,C,D
Class I, Zone 1, IIC
Associated Apparatus
Barrier with
entity Parameters:
Approved
Termi-
nation
SENSOR
1
2
6
5 4
3
SENSOR
1
2
6 3
SENSOR
1
2
6
5 4
3
Terminal 3, 4, 5, 6
Vt or Uo : 5,71 V
It or Io : 8,4 mA
Pt or Po : 12 mW
Ca or Co : 40 uF
La or Lo : 200 mH
UM < 250V
Voc or Uo < Vmax or Ui
Isc or Io < Imax or Ii
Po < Pi
Ca or Co > Ci + Ccable
La or Lo > Li + Lcable
or
FISCO Supply
This device must not be
connected to any
Model SITRANS TH 400
7NG321*-0AN00
associated apparatus
which uses or generates
more than 250 VRMS
Entity
Parameters
Terminal 1, 2
Class I, Zone 1, Ex ib IIC
Entity / FISCO
Barrier type: Rectangular
barrier
FISCO
Segment
coupler
T1..T4:
Ta ≤ +85 ° C Ta ≤ +85 ° C
T5:
Ta ≤ +75 ° C Ta ≤ +75 ° C
T6:
Ta ≤ +60 ° C Ta ≤ +60 ° C
Vmax / Ui 30 V 17.5 V
Imax or Ii 250 mA any
Pi 5.32 W any
Ci 2.0 nF 2.0 nF
Li 1
μ
H 1
μ
H
Nonincendive Field Wiring
parameters
Terminal 1, 2
NI, Class I, Division 2, Group A, B, C, D
NIFW/ FNICO
T1..T4:
Ta ≤ +85 ° C Ta ≤ +85 ° C
T5:
Ta ≤ +75 ° C Ta ≤ +75 ° C
T6:
Ta ≤ +60 ° C Ta ≤ +60 ° C
Vmax / Ui 30 V 17.5 V
Pi 5.32 W any
Ci 2.0 nF 2.0 nF
Li 1
μ
H 1
μ
H
For a current-controlled circuit the
parameter Imax is not required and need
not be aligned with the parameter Isc or It
of the barrier or associated nonincendive
field wiring apparatus.
4 5