ero electronic LIMITROL LHL Mode D'emploi page 9

LINEAR INPUT LINEAR INPUT
LINEAR INPUT LINEAR INPUT LINEAR INPUT
15
14
15
14
Fig. 8 mA, mV AND V INPUTS WIRING
NOTE NOTE NOTE NOTE NOTE:
1) Do not run input wires together with power
cables.
2) Pay attention to the line resistance; a high line
resistance may cause measurement errors.
3) When shielded cable is used, it should be
grounded at one side only to avoid ground loop
currents.
4) The input impedance is equal to:
< 5 Ω for 20 mA dc input
> 1 MΩ for 60 mV dc input
> 400 kΩ for 5 Vdc and 10 Vdc input
B) LOGIC INPUT (For models with Serial B) LOGIC INPUT (For models with Serial
B) LOGIC INPUT (For models with Serial B) LOGIC INPUT (For models with Serial B) LOGIC INPUT (For models with Serial
Interface only) Interface only) Interface only)
Interface only) Interface only)
mA,
+
mV
This input is used for remote alarm reset when
the manual reset of the alarm is selected.
or
_
V
Safety note:
- Do not run logic input wiring with AC power
Shield
cables.
- Use an external dry contact capable of
switching 0.5 mA, 5 Vdc.
- The instrument needs 100 ms to recognize a
contact status variation.
+
mA
- The logic inputs are NOT
measuring input.
mV
_
or
V
G
12
13
Fig. 9- LOGIC INPUT WIRING
GB GB GB
GB GB 6
NOT isolated by the NOT NOT NOT
Logic input