Xylem HYDROVAR smart Operating Instructions Manual page 13

For external on/off switches, (terminals X1/4 – X1/5) contacts, which are suitable for
switching low voltages <10 VDC, are necessary.
If unshielded control cables are used, signal interference may occur and interfere
with the function of the controller.
Terminals: X1/
Terminal: X2/ 1 Fault signal relay
(for dry
Contacts)
!! Fault relay (X2/2 - X2/3) is closed, when there is no error!!
Terminal: X3
Terminal: X5-6/
Terminal: X8
Terminal: X9/ 1 24 VAC or DC
1 GND
2 Actual value input 4...20mA, 50 Ohm internal load resistance
3 Power supply for external transducer; 15VDC, max. 100mA
4 GND
5 5 VDC for external on/off (release); Ri=10kOhm,
(gold plated contact necessary!)
6 GND
7 5 VDC for external low water protection; Ri=10kOhm,
(e.g. incoming pressure switch or water level switch)
8 Thermal switch or PTC (in motor terminal box)
9 Thermal switch or PTC
10 GND
11 Analogue output 2; 0...10 VDC (see chapter 7.25)
12 Current signal input 4...20mA
13 Voltage signal input 0...10V or 2...10V
14 Digital input for activating of 2
2 Fault signal relay
3 Fault signal relay
4 Pump operation
signal relay
5 Pump operation
signal relay
6 Pump operation
signal relay
Display
1 RS 485
2 RS 485
3 RS 485
4 RS 485
RS 485
2 24 VAC or GND
3 Error relay of the connected VFD
4 Error relay of the connected VFD
5 Analogue output for the speed signal of the VFD (0-10V DC)
6 GND
nd
required value
NC max. 250VAC
CC max. 250VAC
NO max. 250VAC
NC max. 250VAC
CC max. 250VAC
NO max. 250VAC
SIO - LOW
SIO + HIGH
GND
+ 5 VDC max. 20mA out
For supply of external interface converter
Supply Voltage
Supply Voltage
13
1A
free of inductivity
1A
free of inductivity
1A
free of inductivity
1A
free of inductivity
1A
free of inductivity
1A
free of inductivity