Electrical Data - Grundfos IO 112 Montage- Und Betriebsanleitung

14. Electrical data

Pos.
Termi-
in Description
nal
fig. 1
Terminal for alarm
T1
relay
8
Terminal for alarm
T2
relay
GND for analog
G1
output 1
Terminal for
A1
analog output 1
GND for analog
G2
output 2
Terminal for
A2
analog output 2
9
K1 GND connection
Terminal for
K2 conductor for
contactor status
R1 GND connection
Terminal for reset-
R2
ting
PE Earth
GND for supply
-
voltage
10
Plus for supply
+
voltage
Terminal for
P1
Pt1000 sensor
Terminal for supply
P2 voltage to Pt1000
sensor
11
Pulse counter
P3
input
Terminal for supply
P4
voltage to AI
P5 Terminal for AI
A RS485 A
12 Y RS485 GND
B RS485 B
Data
Rated voltage and cur-
rent: 240 VAC and 2 A.
Max. switched power:
240 W or 2500 VA.
Max. switched current:
10 A.
Max. switched voltage:
240 VDC* or 440 VAC.
B300 pilot duty [1]
R300 pilot duty [1]
0 V
0 V
0 V
Digital input
0 V
Digital input
Earth
0 VDC
24 VAC ± 10%
24 VAC ± 10%
24 VDC ± 10%
Sensor input
15 V
Sensor input
15 V
Sensor input 4-20 mA
Bus input
0 V
Bus input
Function
All alarms trip the alarm relay.
The alarm relay is closed dur-
ing normal operation.
In case of alarm or if the
IO 112 is not connected to
the electricity supply, the
relay opens and breaks the
connection between T1 and
T2.
Feedback from motor contac-
tor whether the pump is run-
ning or not.
The input must be short-
circuited when the pump is
running.
For resetting of alarms, see
section 10.1.
The input must be short-
circuited when alarms are
reset.
Supply voltage to IO 112
If the Pt1000 function is not
used, terminals P1 and P2
must be connected by a
jumper.
P1 to P5 are used for the
connection of sensors in the
pump. All sensors in contact
with phase voltage must be
double insulated according to
EN 61010-1.
RS485 communication con-
nection (9600 baud)
Diagram
T2
T1
K2
K1
R2
R1
+
A
Y
B
15