Xylem ECOCIRC XL, XLplus Electronic drive - Manual (Page 5)

- Analog 0-
10V
- External
pressure
sensor
- External
temperature
sensor
- External
start/stop
If NO fault
signal on
this cable
gland.
Multi-wire
control
cable,
number of
wires
according
to number
of control
circuits.
Shielded if
necessary
Multi-wire
control
cable,
number of
wires
according
to number
of control
circuits.
Shielded if
necessary
Communicati
on bus
Bus cable
Table 3
2.4 Connection diagram
With reference to Figure 8 and Figure 9 :
Function Terminal
pair
Contact rating See
par.
External
start/stop 
The drive
provides 5VDC
through these
terminals: no
external voltage
must be
provided!
2.5.1
0-10V external
analog input 
2.5.2
Fault signal
 Max 250V at 2A
(inductive load)
2.5.3
4-20mA
pressure sensor
input

2.5.4
External
temperature
sensor
4

The drive works
with a KTY83
temperature
sensor (1K
Ω at
25°C)
2.5.5
Communication
bus (standard)
4

TIA/EIA RS485 2.5.6
Communication
bus (optional)
4

TIA/EIA RS485 2.5.7
Optional
Wireless /
RS485 module

2.5.8
Table 4
2.5 I/O description
2.5.1 External start/stop []
The circulator can be started or stopped via an
external potential-free contact or a relay connected to
terminals
 and  . If no external start/stop switch is
connected, the connection jumper between terminals
4
Only on ecocirc XLplus
 and  , which is the factory setting, should be
maintained.
NOTICE
The drive provides 5VDC through these terminals: no
external voltage must be provided to these terminals!
2.5.2 External analog input 0-10V []
An external analog signal 0-10V, applied to terminals
 and  , controls the circulator speed in a range from
0 to 100%, following a linear function as depicted in
Figure 1 .
Figure 1
In the below table a description of the milestones
shown in
Figure 1.
V
in
thres
holds
[V]
Speed
setpoint
[rpm]
when
V
in

Pump
status
when V
in

Po
int Speed
setpoint
[rpm]
when
V
in

Pump
status
when V
in

Po
int
0 -
Input
disabled
- -
Input
disabled
-
0.8 -
Input
disabled
- 0 OFF

1.19 -
Input
disabled
- 0 OFF

1.20 0 OFF

MIN RUN

1.49 0 OFF

MIN RUN
1.50 MIN RUN

MIN RUN

10.0 MAX RUN

MAX RUN

Table 5
2.5.3 Fault signal []
The drive controls a relay for a potential-free fault
signal: in case of blocking error, the relay is activated
so that the terminals
 and  are short circuited.
RATINGS
V
max
< 250VAC
I
max
< 5A (if resistive load)
I
max
< 2A (if inductive load)