HF115PEN_v0501_04
Page 36
5.3. CONFIGURATION EXAMPLES INTRINSICALLY SAFE APPLICATIONS
Fig. 14: Configuration example 1 Intrinsically Safe.
TERMINAL CONNECTORS
F100-series
HAZARDOUS AREA
Ci = 17nF
3
4
Common ground
Common ground
Main supply
Power supply type PD: 16-30V DC
Analog output type AF:
passive floating 4-20mA
RXD
Common ground
TXD
28
26 29
5
6
Common ground
0
1
27
8
123456
910
11 12 1 4
13
Common ground
Common ground
Signal
Signal
Supply *
Circuit depends on
type of signal
Supply *
Circuit depends on
type of signal
Flowmeter input
type: P
pulse
Flowmeter input
type: P
pulse
DTR
+12V
27
e.g. counter
e.g. counter
123456
e.g. indicator
e.g. relay
e.g. PC
e.g. indicator
Modbus communication type CT: TTL
* Note power supply type PD: the supply voltage to the sensor is maximum 8.7V (Uo=8.7V Io=25mA Po=150mW)
Configuration example IIB - /IIIC F115-P-AF-CT-OT-(PB)-(PD)-XI
Due to analog output type AF, the unit has to be powered with
battery type PB or with external power supply type PD.
Pulse output type OT:
passive transistor
Control output type OT:
passive transistor
Ci is negligibly
small
Ci is negligibly
small
Ci is negligibly
small
Ci is negligibly
small
negative pulse value
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
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
+
-
Power supply
For example
MTL5525
Uo
Io
Po
= max. 30 V
= max. 100 mA
= max. 0.75 W