HF124PEN_v0501_04
Page 37
Explanation Intrinsically Safe options:
Type AF - Intrinsically Safe floating 4-20mA analog output - Terminal 7-8:
A floating 4-20mA signal control output is available with this option.
When the output is disabled, a 3.5mA signal will be generated.
Max. driving capacity 1000 Ohm @ 30V DC.
Note! It is required to link the minus from the analog output - terminal 7 - with a ground terminal of
the unit; terminal: GND, 3, 5, 9, 12 or 15.
Type PD - Intrinsically Safe power supply and sensor supply - Terminal GND- 01 and 11.
T
YPE
SENSOR SUPPLY
T
erminal
GND
01
02
PD
Input voltage:
8-30V DC
3,2 - 8,1V
L-
L+
internally linked with terminal 01.
Terminal 02: this terminal offers the same voltage as connected to terminal 01.
Terminal 11: this terminal offers a 3.2V or 8.1V to power the sensor.
This voltage is selected with the switch(es) inside the enclosure. First, remove the terminals after
which the internal plastic cover can be removed.
Switch position
Switch position
terminal 11
no function
SWITCH
1
VOLTAGE
SWITCH
2
on
8.1 V DC
not available
off
3.2 V DC
Fig. 14: Switch position voltage selection type PD-XI.