Xylem HYDROVAR Smart - Manual (Page 13)

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/ 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 nd required value
Terminal: X2/ 1 Fault signal relay NC max. 250VAC 1A free of inductivity
(for dry 2 Fault signal relay CC max. 250VAC 1A free of inductivity
Contacts) 3 Fault signal relay NO max. 250VAC 1A free of inductivity
4 Pump operation
signal relay
NC max. 250VAC 1A free of inductivity
5 Pump operation
signal relay
CC max. 250VAC 1A free of inductivity
6 Pump operation
signal relay
NO max. 250VAC 1A free of inductivity
!! Fault relay (X2/2 - X2/3) is closed, when there is no error!!
Terminal: X3 Display
Terminal: X5-6/ 1 RS 485 SIO - LOW
2 RS 485 SIO + HIGH
3 RS 485 GND
4 RS 485 + 5 VDC max. 20mA out
For supply of external interface converter
Terminal: X8 RS 485
Terminal: X9/ 1 24 VAC or DC Supply Voltage
2 24 VAC or GND Supply Voltage
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