HF197AEN_v0501_04
Page 35
Fig. 15: Configuration example 2 Intrinsically Safe.
TERMINAL CONNECTORS
F100-series
HAZARDOUS AREA
3
4
Common ground
Common ground
TOTAL OF ALL CONNECTED
APPARATUS MAY NOT EXCEED
MINUS 17nF
(17nF IS USED BY THE ANALOG
OUTPUT SIGNAL TERMINAL 7+ 8)
Co
66nF
Main supply
Power supply type PD: 16-30V DC
(please note: PD
battery supply (type PC) is NOT allowed in IIC applications).
and
RXD
Common ground
TXD
28
26
29
5
6
Common ground
0
1
2
Ci = 17nF
Analog output type AF:
passive floating 4-20mA
7
8
91
0
11
Common ground
Signal
Supply *
C
irc
ui
t depen
ds
o
n
ty
pe of
si
gn
al
Ci is negligibly
small
Temperature input type: A
(0)4-20mA
Modbus communication type CT: TTL
Please note: communciation type CT is allowed in IIC applications.
not
DTR
+12V
27
e.g. PC
Configuration example IIB/IIIC and IIC - F197-A-AF-(CT)-OT-PD-XI
Ci is negligibly
small
Ci is negligibly
small
e.g. alarm
Switch output type OT:
passive transistor
Switch output type OT:
passive transistor
Alarm output 2
* Note power supply type PD: the supply voltage to the sensor is as connected to terminal 1 (internally linked).
Alarm output 1
e.g. alarm
e.g. controller
I
P
I
P
Note: above values are safety values.
Consult the technical specification for operational values.
SAFE AREA
Isolator
TTL to:
RS232
RS422
TTL
For example:
MTL5051
I.S. Certified
+
-
+
-
Power supply or
switch interface
For example
MTL5525
MTL5511
= max. 30 V
= max. 100 mA
= max. 0.75 W
Uo
Io
Po
= max. 30 V
= max. 250 mA
= max. 0.85 W
Uo
Io
Po
+
-
Power supply
For example
MTL5525
Uo
Io
Po
= max. 30 V
= max. 100 mA
= max. 0.75 W
+
-
Power supply or
switch interface
For example
MTL5525
MTL5511
= max. 30 V
= max. 100 mA
= max. 0.75 W
Uo
Io
Po
* Note: Communication only allowed when configured as IIB/IIIC.
