HF131PEN_v0501_05
Page 40
Fig. 17: Configuration example 3 Intrinsically Safe
TERMINAL CONNECTORS
F100-series
HAZARDOUS AREA
3
4
91
0
11
Common ground
Common ground
Signal
Supply *
C
irc
ui
t depen
ds
o
n
ty
pe of
si
gn
al
RXD
Common ground
TXD
28
26
29
5
6
Common ground
Flowmeter input
type: P
pulse
DTR
+12V
27
e.g. PC
Modbus communication type CT: TTL
Please note: communciation type CT is allowed in IIC applications.
not
* Note sensor supply voltage: 1.2 V DC for coil sensors or 3.2V DC for other pulse sensors.
Configuration example IIB/IIIC and IIC - F131-P-AP-(CT)-OT-XI
e.g. counter
123456
Ci is negligibly
small
Ci is negligibly
small
12
1
4
13
+ 3.2V
low-pass
filter
1M
16
15
+ 3.2V
low-pass
filter
1M
Common ground
Common ground
e.g. relay
Ci is negligibly
small
Analog output type AP:
passive 4-20mA (output loop powered)
7
8
Common ground
e.g. indicator
e.g. indicator
Control output type OT:
passive transistor
e.g. relay or counter
Control output type OT:
passive transistor
e.g. relay
Logic input:
PAUSE / CLEAR
Ci is negligibly
small
Logic input:
START
Ci is negligibly
small
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
+
-
Power supply
and/or repeater
For example
MTL5525
MTL5541
Uo
Io
Po
= max. 30 V
= max. 100 mA
= max. 0.75 W
= max. 30 V
= max. 250 mA
= max. 0.85 W
Uo
Io
Po
+
-
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.
