
HF124PEN_v0501_04
Page 39
Fig. 16: Configuration example Intrinsically Safe.
TERMINAL CONNECTORS
F100-series
HAZARDOUS AREA
Ci = 17nF
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
Analog output type AP:
passive 4-20mA
RXD
Common ground
TXD
28
26
29
5
6
Common ground
0
1
2
DTR
+12V
27
e.g. PC
Modbus communication type CT: TTL
Please note: communciation type CT is allowed in IIC applications.
not
Configuration example IIB/IIIC and IIC - F124-P-AP-(CT)-OT-PD-XI
Ci is negligibly
small
Ci is negligibly
small
Switch output type OT:
passive transistor
Switch output type OT:
passive transistor
Alarm output 2
Alarm output 1
7
8
Common ground
e.g. valve controller
P
I
Safety inputl
Ci is negligibly
small
15
16
Common ground
+ 3.2V
low-pass
filter
1M
e.g. sounder
e.g. sounder
91
0
11
12
1
4
13
Common ground
Common ground
Signal
Signal
Supply *
C
irc
ui
t depends
on
ty
pe
of
s
ignal
Supply *
C
irc
ui
t depen
ds
o
n
ty
pe of
si
gn
al
Flowmeter input
type: P
pulse
Flowmeter input
type: P
pulse
Ci is negligibly
small
Ci is negligibly
small
* Note power supply type PD: the supply voltage to the sensor is maximum 8.7V (Uo=8.7V Io=25mA Po=150mW)
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
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.