INSTRUCTION MANUAL
IM224R03
®
Hydrovar
Variable Speed Control HV, 2 HP – 15 HP VERSION 0307
SERVICE MANUAL
Commercial Water
Section A
Troubleshooting the Control Card (using a Multimeter).
Power Supply disconnected!!!
Xylem Inc.
GND Connection to Power Unit
(attached via the screws)
The following tests have to be made without connected cables.
1) Internal Resistance – Digital Inputs:
Low Water
X3/1 (GND) – X3/11
=> 90k Ω / 2.5M Ω
External ON/OFF (release)
X3/1 (GND) – X3/7 => 14k Ω
Configurable Digital Input (Digi 1):
X3/1 (GND) – X3/9 => 14k Ω
Digital Inputs (Dig 2 /Dig 3 /Dig 4):
X3/1 (GND) – X3/5 / 6 / 15
=> 20k Ω
2) Internal Resistance of the Analogue
Current Inputs:
(Sensor 1/2 - Req. Val 1/2)
X3/1 (GND) – X3/2 / 4 / 18 / 23 =>50 Ω
3) Capacity of Electronic Ground to Earth:
X3/1 (GND) – earth => 60nF
Important to bleed off Hf- Disturbances!
X3X3
24 +24V
23
22
21
20
19 +10V
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3 +24V
2
1
Additional power supply ** max. 100 mA
Current signal input (required val. 2)
0-20mA / 4-20mA [Ri=50Ω]
Analog output 2 4-20mA [Ri=500Ω]
Analog output 1 0-10 VDC
Current signal input (required val. 1)
0-20mA / 4-20mA [Ri=50Ω]
Voltage signal input (required value 2)
0-10 VDC *DIG 4
Voltage signal input (required value 1)
0-10 VDC
Low water
Configurable digital input 1 DIG 1
External ON/OFF (release)
Actual-value-voltage input sensor 1 *DIG 2
Actual-value-voltage input sensor 2 *DIG 3
Actual-value-current input sensor 2
Sensor supply ** max. 100 mA
Actual value current input sensor 1
Ground
PAGE 2
Commercial Water
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.
Xylem Inc.
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
PAGE 3
Commercial Water
UW
Section B
Troubleshooting the Rectifier and the IGBT Module (using a Multimeter).
Power Supply disconnected!!!
Single Phase Unit HV 2, 3 HP
Xylem Inc.
DC –
DC +
L1 N U V W
Rectifier
AC Input
L1
L2/N
IGBT
+ DC
– DC
+ DC
– DC
1
a
1
b
Motor
1
V
c
PAGE 4
Commercial Water
Check the following values:
Black Wire (GND) Red Wire of Multimeter Result
Rectifier Values
Xylem Inc.
L1
N
L1
N
N
N
IGBT Values
U
DC+ V 0.48 V
W
U
DC– V OL (Overload)
W
U
V DC+ OL (Overload)
W
U
V DC– 0.45 V
W
NOTE: Put multimeter on diode check ( ).
L1
DC+
L1
DC–
DC+ OL (Overload)
DC- 0.54 V
0.57 V
OL (Overload)
Result:
- If the above mentioned values between power supply and DC part are significantly different
=> Rectifier may be damaged.
- If values between motor connection and DC part are significantly different
=> IGBT module may have a failure.
PAGE 5
Commercial Water
UW
Three Phase Unit HV 3, 5 HP
Xylem Inc.
L1 L2 L3 U V W
Three Phase Unit HV 7.5, 15 HP
DC –
DC +
Rectifier
AC Input
L1
L2
L3
IGBT
+ DC
– DC
+ DC
– DC
1
a
1
b
Motor
1
V
c
DC +
L1 L2 L3 U V W
DC –
PAGE 6
Commercial Water
Check the following values:
Black Wire (GND) Red Wire of Multimeter Result
Rectifier Values
L1
L2 DC+ OL (Overload)
L3
L1
L2 DC– 0.40 - 0.54 V
L3
L1
DC+ L2 0.40 - 0.54 V
L3
L1
DC– L2 OL (Overload)
L3
Xylem Inc.
IGBT Values
U
DC+ V 0.420 - 0.635 V
W
U
DC– V OL (Overload)
W
U
V DC+ OL (Overload)
W
U
V DC- 0.40 - 0.45 V
W
NOTE: Put multimeter on diode check ( ).
Result:
- If the above mentioned values between power supply and DC part are significantly different
=> Rectifier may be damaged.
- If values between motor connection and DC part are significantly different
=> IGBT module may have a failure.
PAGE 7
Xylem
1) The tissue in plants that brings water upward from the roots;
2) a leading global water technology company.
We’re 12,500 people unified in a common purpose: creating innovative solutions
to meet our world’s water needs. Developing new technologies that will improve
the way water is used, conserved, and re-used in the future is central to our work.
We move, treat, analyze, and return water to the environment, and we help people
use water efficiently, in their homes, buildings, factories and farms. In more than
150 countries, we have strong, long-standing relationships with customers who
know us for our powerful combination of leading product brands and applications
expertise, backed by a legacy of innovation.
For more information on how Xylem can help you, go to www.xyleminc.com
Xylem Inc.
2881 East Bayard Street Ext.
Seneca Falls, NY 13148
Phone: (800) 453-6777
Fax: (888) 322-5877
© 2012 Xylem Inc. IM224 Revision Number 3 February 2013
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