horiba LO-300, Instruction Manual

Page: 20 / 81

Overview
6

External output function

Contact output
Table 2 shows the contact output of the detector.
The judgment result of detection and error is externally output at each dry contact point.
There are normal open (NO) contact and normal close (NC) contact available: Choose
whichever appropriate according to customer’s installation environment.
The system error contact output happens or may happen on the following conditions.
Provide a unit to neglect a signal more than 5 seconds if you want to avoid a momentary error.

Following five seconds after powered to the detector.

Momentary power down longer than 500 ms.

Power voltage is affected greatly by a power consumable apparatus nearby.

Noise on the power line (100 V AC) for the detector.
Table 2 Contact output
Detector status LCD Display
Standard
Oil film alarm (AL)
contact
System error
(ER) contact
ALARM WARNING
NO NC NO NC NO NC
Normal NORMAL RUN      
Oil film alarm OIL ALARM      
Oil film warning OIL WARNING      
Instrument error SYSTEM ERROR      
Detection level
error
Upper limit HIGH LEVEL      
Lower limit LOW LEVEL      
Power interruption -      
CPU error
LED ON in the left of display
(CPU ERR)
- - - -  

In the factory default setting, contact output mode of “ALARM” is selected.
For details, refer to “ Contact output setting ” (page 38).

For the detailed explanation of the optional functions, refer to “ Data ” (page 60).

NO, NC is indicated on the crimp terminals of the signal and contact output cables.
For details, refer to “ Wiring for detector ” (page 27).

 : OPEN,  : CLOSE, -: Either state of OPEN or CLOSE