Innotech Genesis II Digital Controller (v5) - Manual (Page 79)

Page 79
Genesis II Installation Instructions
© Mass Electronics Pty Ltd 2010 Chapter 4 – Commissioning
1 2
V
AC
V
DC
24V
DIGITAL CONTROLLER
240VAC POWER
POINT
24VAC
TRANSFORMER
DIGITAL
VOLT-OHM
METER
EARTH
Check 24VAC and 24VDC inputs as follows:
1. Ensure power to the unit is turned off.
2. For 24VAC units, ensure the AC Neutral is connected to Terminal 2 and the resistance between
Terminal 2 and the enclosure’s main earth link is 3.0 Ohms, or less.
3. Disconnect the power lead from Terminal 1 (Figure 4-1).
4. Connect a digital volt-ohm-meter red (+) test lead to the disconnected power lead and the black
(-) test lead to Terminal 2.
5. Set the voltmeter to the proper range to measure 24 Volts.
6. Turn on the power.
7. The voltmeter should read 24 Volts ±10%. For 24VDC units, make sure the power lead going to
Terminal 1 is positive and Terminal 2 is negative.
8. Ensure measurement is in DC and not AC voltage.
9. Turn off the power.
10. Disconnect the digital voltmeter and reconnect the wire to Terminal 1.
11. Repeat Steps 1 through 9 for the other 24-Volt units. For units not included in this manual, refer
to the appropriate product datasheet.
Figure 4-1: Checking Power Input