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ATEX: SUPPLEMENTARY INSTRUCTIONS
7
119
OPTIFLEX 1300 C
www.krohne.com
01/2008 • 4000172301 - HB OPTIFLEX 1300 R02 en
•
If you use only one cable entry, seal the other one with an EEx d-approved plug.
Load resistor
•
Connect the load resistor to the positive terminal of the power supply.
•
Ground the negative connection.
•
If the load resistor has to be connected to the negative terminal, the loop resistance must not
be more than 250 ohms.
Supply voltage
CAUTION!
Do not ground the positive connection.
Terminal
Minimum voltage at terminal [VDC] Maximum voltage at terminal [VDC]
1 (U
S1
)
20
1
36
1
2 (U
S2
)
2
10
1
30
1
1
for an output of 22 mA
2
use a second power supply. This power supply energizes terminal 2 only.
HB_OPTIFLEX1300_EN_D4_080428.book Page 119 Tuesday, April 29, 2008 2:47 PM