Terminals Of The Hydrovar-Smart - Xylem HYDROVAR smart Operating Instructions Manual

4.1

Terminals of the HYDROVAR-Smart

Screen
Actual value signal input 4-20mA
+15 VDC max. 100mA
External on/off
External low Water
Motor thermal switch or PTC
Ground
Analogue output 2; 0-10V
Current signal input 4..20mA
Voltage signal input 0..10V or 2..10V
Digital input
Fault signal
Pump running signal
RS 485
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
1
2
3
4
5
6
7
8
9
10
11
12
13
14
X2
NC 1
CC 2
NO
3
NC
4
CC
5
NO 6
X 5
SIO -
1
SIO + 2
3
GND
+ 5V
4
1
-
O
S I
Display
X9
X3
X8
X6
3
2 4
RS 485
+
V
D
5
N
O
+
G
S I
RS 485
14
GND
6
5 Analogue output 1 (0-10V)
to the VFD
4
Error Relay of the VFD
3
2
GND
1 DC +supply
Supply Voltage