Instruction Manual

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4-23
IM 01R04B04-00E-E 8th edition March 01, 2011 -00
All Rights Reserved. Copyright © 2003, Rota Yokogawa
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The intrinsic safe pulse output is passive and an external power supply with shunt-diode type barrier or
isolation type barrier should be connected.
Maximum voltage : 30 V DC
Maximum current : 100 mA
Example of installation :
Hazardous area
Pout 1 +
Pout 1 -
R barrier
R load
Vin
counter
V out
Ground
Safe area
ROTAMASS
/KF2
F420.EPS
Power supply range : 10.5 V … 30 V DC for Not-HART application
Power supply range : 16.75 V … 30 V DC for HART application
Load resistance : 20 … 600 Ω for Not-HART application
Load resistance : 230 … 600 Ω for HART application
Load resistance vs Power supply voltage :
800
700
600
500
400
300
200
100
0
10 12 14 16 18 20 22 24 26 28 30
Load
resistance [ Ω ]
Power supply voltage [V]
HART communication available range
F419.EPS