Xylem hydrovar, Installation, Operation And Maintenance Manual

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Table 10: Status relays
Terminals Description Comments
X2/1 Status Relay 2: NO Status Relay 2
Maximum 250 VAC, 0.25 A
Maximum 220 VDC, 0.25 A
Maximum 30 VDC, 2 A
X2/2 Status Relay 2: NC
X2/3 Status Relay 2: CC
X2/4 Status Relay 1: NO Status Relay 1
Maximum 250 VAC, 0.25 A
Maximum 220 VDC, 0.25 A
Maximum 30 VDC, 2 A
X2/5 Status Relay 1: NC
X2/6 Status Relay 1: CC
6.7 Premium card terminals
6.7.1 Digital and analog I/O (X3)
Several terminals, from X3/1 to X3/12, are used to connect additional analog and digital
I/Os to correspondent input signals, most of them configurable by specific parameters.
Table 11: PC I/O terminals
Item Terminals Description Comments
Digital Input
X3/1 Configurable digital input 2 Active low
X3/2 Ground for configurable
digital input 2
GND, electronic ground (for
X3/1)
Signal 1
X3/3 Analog output signal 1 4-20mA
X3/4 Ground for analog output
signal 1
GND, electronic ground (for
X3/3)
Signal 2
X3/5 Analog output signal 2 0-10 VDC
X3/6 Ground for analog output
signal 2
GND, electronic ground (for
X3/5)
Sensor 3
X3/7 Power supply for external
sensor 3
24VDC, Σ max. 100mA
X3/8 Actual value current/voltage
input sensor 3
0-20mA / 4-20mA / 0-10
VDC / 2-10 VDC
X3/9 Ground for external sensor
3
GND, electronic ground (for
X3/8)
Sensor 4
X3/10 Power supply for external
sensor 4
24VDC,
Σ
max. 100mA
X3/11 Actual value current/voltage
input sensor 4
0-20mA / 4-20mA / 0-10
VDC / 2-10 VDC
X3/12 Ground for external sensor
4
GND, electronic ground (for
X3/11)
6.7.2 Relays (X4)
Several terminals, from X4/1 to X4/6, are used to connect up to 5 fixed speed pumps
through an external panel.
6 Electrical Installation
38 HVL 2.015-4.220 Installation, Operation, and Maintenance Manual