GARAN EWS-102 System Setup - Page 4

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Also for GARAN EWS-102: System Setup (4 pages), Calibration & Setup (8 pages), Supplementary Information (2 pages), System Setup (4 pages)

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3 EWS-102 Setup and Calibration Garan4.pdf 1 17/05/2016 14:17:36

EWS-102 CONTROL UNIT

Selectt he ﬁrst menu item.

CMY

Rev 2.1 subject to alteration

TEST & ANALOG OUTPUT FINE TUNE

To begin the test and loop calibration procedure, press the

button (unit beeps), hold itf or about a second and then release it

(unit beeps again).

All LCD segments are displayed so you can check thatt hey are functioning.

Relay 3 is turned on

Relay 2 is turned on

Relay 1 is turned on

Relay 1 is turned oﬀ

Relay 2 is turned oﬀ

Relay 3 is turned oﬀ

This is shown on the Loop model only. The Standard model exits test mode att his point.

This is used to ﬁne tune the current loop output, which is proportional to the elevator

load including any attached chain. The factory settings are suﬃciently accurate for most

applications buti t may be necessary to ﬁne tune them by connecting a power supply and

multimeter in series with the 4-20mA output terminals and adjusting the 4mA (empty) and

20mA output (capacity) values. Iti sn't necessary to monitor the sensor for this operation.

The values shown on the EWS 102 display during ﬁne tuning are for guidance only.

After 1 second, the display will show '4' representing the 4mA output. At this point,

the meter should measure 4mA exactly. If necessary, press to enable fine tuning

or press to move to the 20mA setting. To adjust the 4mA output, use the

buttons to edit the displayed 3-digit value. Once adjusted, save it by pressing

The meter should now measure 20mA exactly. If necessary, press to enable fine

tuning or press to exit test mode. To adjust the 20mA output, use the

buttons to edit the displayed 4-digit value. Once adjusted, save it by pressing

NOTE: If you wish to ﬁne tune the 4-20mA

output, you need to have a suitable

multimeter at hand.

and