HF110AEN_v0501_04
Page 36
Fig. 14: Configuration example 2 Intrinsically Safe.
Ci = 17nF
91
0
11
Common ground
Common ground
Common ground
Signal
TOTAL OF ALL CONNECTED
APPARATUS MAY NOT EXCEED
MINUS 17nF
(17nF IS USED BY THE ANALOG
OUTPUT SIGNAL TERMINAL 7+ 8)
Co
66nF
Supply *
Main supply
C
irc
ui
t depen
ds
o
n
ty
pe of
si
gn
al
Power supply type PD: 16-30V DC
(please note: PD
battery supply (type PB) is NOT allowed in IIC applications).
and
Analog output type AP:
passive 4-20mA
5
6
Common ground
0
1
27
8
123456
Flowmeter input type: A
(0)4-20mA
Common ground
e.g. counter
e.g. counter
123456
e.g. indicator
TERMINAL CONNECTORS
F100-series
HAZARDOUS AREA
reset total
Status input type IB:
Ci is negligibly
small
12
13
Common ground
RXD
Common ground
TXD
28
26
29
DTR
+12V
27
e.g. PC
+ 3.2V
low-pass
filter
1M
Modbus communication type CT: TTL
Please note: communciation type CT is allowed in IIC applications.
not
Configuration example IIB/IIIC and IIC - F110-A-AP-IB-(CT)-OT-PD-XI
Pulse output type OT:
passive transistor
Ci is negligibly
small
Ci is negligibly
small
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
* Note power supply type PD: the supply voltage to the sensor is as connected to terminal 1 (internally linked).
* Note: Communication only allowed when configured as IIB/IIIC.