Innotech Genesis V4 System - Manual (Page 59)

Installation Instructions for Innotech Genesis Systems
Edition 011100 4-4
Check 24Vac and 24Vdc inputs as follows:
a. Ensure power to the unit is turned off.
b. 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.
c. Disconnect the power lead from Terminal 1 (Figure 4-1).
d. Connect a digital voltmeter red (+) test lead to the disconnected power lead and the
black (-) test lead to Terminal 2.
e. Set the voltmeter to the proper range to measure 24 Volts.
f. Turn on the power.
g. 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.
h. Turn off the power.
i. Disconnect the digital voltmeter and reconnect the wire to Terminal 1.
j. Repeat Steps a. through i. for the other 24-Volt units.
For units not included in this manual, refer to the appropriate data sheet in Appendix B.
Figure 4-1. Checking Power Input.
1 2
V
AC
V
DC
24V
DIGITAL CONTROLLER
240Vac POWER
POINT
24Vac
TRANSFORMER
DIGITAL
VOLT-OHM
METER
EARTH