Emerson MICRO MOTION 1700 - Manual (Page 91)

Safe area frequency output/discrete output load resistance values Figure 8-7:
10000
9000
8000
7000
6000
5000
4000
3000
2000
1000
0
5 7 9 11 13 15 17 19 21 23
OPERATING REGION
Supply voltage VDC (Volts)
External pull-up resistor R
load
range
(Ohms)
R
max
= (V
supply
– 4)/0.003
Rmin = (Vsupply – 25)/0.006
Min. 100 W for supply voltage less than 25.6 Volts
25 27 29
8.5 Hazardous area wiring
Information provided about I.S. barriers is intended as an overview. Application-specific or
product-specific questions should be addressed to the barrier manufacturer or
Micro Motion.
DANGER!
Hazardous voltage can cause severe injury or death. Shut off the power before wiring
transmitter outputs.
DANGER!
Improper wiring in a hazardous environment can cause an explosion. Install the transmitter
only in an area that complies with the hazardous classification tag on the transmitter.
Safety parameters Table 8-1:
Parameter 4–20 mA Frequency/discrete
Voltage (U
i
) 30 V 30 V
Current (I
i
) 300 mA 100 mA
Power (P
i
) 1.0 W 0.75 W
I/O wiring for Model 1700 and Model 2700 transmitters with intrinsically safe outputs
Installation Manual 87