Onicon System-10 BTU Manuel d'utilisateur télécharger pdf (Page 17)

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System-10 BTU Meter Manual 03/15 - 0651-16 / 18323 Page 17

OPERATING FROM 24 VAC POWER

IMPORTANT NOTE

This option is not eld selectable. Contact ONICON if you need to change the input voltage rating.

The SYSTEM-10 BTU Meter can be congured to operate from 24 ±4 V 50/60 Hz power.

Connect the 24 volt power source to the System-10 using the pre-drilled conduit or strain

relief opening located at the bottom of the enclosure. Do not connect the 24 volt source

until all signal connections have been made and veried. Connect 24 VAC wires to the

appropriate screw terminals as shown. Connect the protective earth wire as shown. Do not

exceed 13 in-lb (1.5 Nm) of torque when tightening.

As power is initially applied to the System-10, immediately conrm that the power light is

illuminated and the display is scrolling through the character diagnostic test. The test will

begin by indicating the letter P in every position followed by a countdown from 9 to 0 for

each digit. If this does not occur, disconnect power immediately and re-verify all wiring

connections. Contact ONICON if the problem persists.

60HZ

J2-1

+15

+24

J2-12

20075-50 REV. A

LED1

VAR1

TB1

20075-50 REV. A

TB1

3/4 AMP

L1 N Not Used

CAUTION

This product must be connected to earth ground for proper operation. Failure to do so may result

in erratic operation.

Protective Earth

Ground

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Onicon System-10 BTU Manuel d'utilisateur Page 17