Xylem HYDROVAR Smart - Manual (Page 14)

14
4.1 Terminals of the HYDROVAR-Smart
When connecting more variable speed drives (max. 4 pumps) via the interface RS 485, the
terminals X5/1/2/3 or X6/1/2/3 of each Hydrovar-Smart have to be connected together by
using a shielded cable and have to be programmed accordingly.
X 1
X 5
12
4
5
6
7
8
9
11
10
1
2
3
4
1
2
3
Actual value signal input 4-20mA
+15 VDC max. 100mA
SIO -
SIO +
GND
+ 5V
External low Water
External on/off
Motor thermal switch or PTC
Screen
13
14
Ground
Analogue output 2; 0-10V
Current signal input 4..20mA
Fault signal
X2
4
1
2
3
6
5 Pump running signal
RS 485
X6
4 1 2 3
SI
O
-
S I
O
+
G
N
D
+
5
V
RS 485
Voltage signal input 0..10V or 2..10V
Digital input
NC
NC
CC
NO
CC
NO
X9
4
1
2
3
6
5
DC +supply
Error Relay of the VFD
Analogue output 1 (0-10V)
to the VFD
GND
RS 485
X8
GND
Supply Voltage
X3
Display
HV – Smart Controlcard HV – Smart Controlcard