Xylem inc – Xylem IM224 R03 Hydrovar Variable Speed Control HV, 2HP-15HP Version 0307 User Manual
Page 3
Commercial Water
Xylem Inc.
PAGE 3
Section A
(continued)
Troubleshooting the Control Card (using a Multimeter).
Power Supply disconnected!!!
Note
When the HYDROVAR is connected to power supply, the components of
the power unit as well as certain Components of the Control Card remain
under voltage.
Touching these components seriously endangers life!
All work, carried out at opened HYDROVAR, must be performed by qualified and
authorized technicians.
The following tests have to be made without connected cables.
1) Sensor Power Supply:
X3/1 (GND) – X3/3 => 24 VDC
X3/1 (GND) – X3/24 => 24 VDC
2) Internal Ref. for Analog Output:
X3/1 (GND) – X3/19 => 10 VDC
3) Digital Inputs:
External On/Off
X3/ 7 – X3/8 (GND)
=> 5 VDC
Conf. Digital Input 1
X3/ 9 – X3/10 (GND)
=> 5 VDC
Low Water
X3/ 11 – X3/12 (GND)
=> 5 VDC