Xylem IM255 AQUAVAR Intelligent Pump Controller User Manual
Page 133
The analog output is galvanically isolated from the supply voltage (PELV) and other high-
voltage terminals.
Control card, RS-485 serial communication
Terminal number
69 (P, TX+, RX+), 69 (N, TX-, RX-)
Terminal number 61
Common for terminals 68 and 69
The RS-485 serial communication circuit is functionally separated from other central
circuits and galvanically isolated from the supply-voltage (PELV).
Digital output
Programmable digital/pulse outputs
2
Terminal number
27, 29
1)
Voltage level at digital/frequency output
0–24 V
Maximum output current (sink or source)
40 mA
Maximum load at frequency output
1 kΩ
Maximum capacitive load at frequency output
10 nF
Minimum output frequency at frequency output
0 Hz
Maximum output frequency at frequency output
32 kHZ
Accuracy of frequency output
Maximum error: 0.1% of full scale
Resolution of frequency outputs
12 bit
The digital output is galvanically isolated from the supply voltage (PELV) and other high-
voltage terminals.
1)
Terminal 27 and 29 can also be programmed as input.
Control card, 24 V DC output
Terminal number
12, 13
Output voltage
24 V +1, 3 V
Maximum load
200 mA
The 24 V DC supply is galvanically isolated from the supply voltage (PELV), but has the
same potential as the analog and digital inputs and outputs.
Relay outputs
Programmable relay outputs
all kW: 2
Relay 01 terminal number
13 (break), 12 (make)
Maximum terminal load (AC-1)
1)
on 13 (NC), 12 (NO)
(resistive load)
240 V AV, 2 A
Maximum terminal load (AC-15)
1)
(inductive load @ cosϕ
0.4)
240 V AC, 0.2 A
Maximum terminal load (DC-1)
1)
on 12 (NO), 13 (NC)
(resistive load)
60 V DC, 1 A
Maximum terminal load (DC-13)
1)
(inductive load)
24 V DC, 0.1 A
Relay 02 (only) terminal number
4–6 (break), 4–5 (make)
Maximum terminal load (AC-1)
1)
on 45 (NO) (resistive
load)
2)3)
overvoltage category II
400 V AC, 2 A
Maximum terminal load (AC-15)
1)
on 45 (NO) (inductive
load @ cosϕ 0.4)
240 V AC, 0.2 A
Maximum terminal load (DC-1)
1)
on 45 (NO) (resistive
load)
80 V DC, 2 A
Technical Specification
Aquavar
®
Intelligent Pump Controller INSTRUCTION MANUAL
131