Electrical Data; Inputs - Grundfos IO 401 Montage- Und Betriebsanleitung

5. Electrical data

5.1 Inputs

Digital inputs (24 V)
Voltage category
Insulation voltage
Insulation test voltage
Output voltage
(open contact)
Output current
(closed contact)
Voltage step
from high to
low
Voltage step
from low to
high
Input filter time
The digital inputs are activated by short-circuiting the
input concerned to 0 V, e.g. with a contact or a relay.
Digital and analog inputs for the same pump have
the same minus potential. The inputs are not iso-
lated from each other.
Thermal switch / PTC inputs (5 V)
Voltage category
Insulation voltage
Insulation test voltage
Output voltage
(open contact)
Output current
(closed contact)
Voltage step
from high to
low
Equivalent external load
Voltage step
from low to
high
Equivalent external load
Input filter time
10
II
50 V
(to system earth)
700 VDC
24 V
5 mA
9.35 V
11.75 V
41 ±7 ms
IIl
400 V (to all other
terminals)
4 kVAC
5 V
2 mA
2.0 V
1.5 kΩ
2.5 V
2.2 kΩ
41 ±7 ms
Inputs for Pt100/Pt1000
Voltage category
Insulation voltage
Insulation test voltage
Temperature range
Sensor type
Sensor current (Pt100)
Sensor current (Pt1000)
Measuring resolution
Measuring accuracy
at 25°C
Mains frequency
suppression
Temperature tolerances during operation (rms):
Pt100
Pt1000
Filter times:
Integration time
Reading interval
II
50 V
(to system earth)
700 VDC
0-200°C
Screened
2-, 3-, 4-core cable
2.5 mA
0.25 mA
0.50°C
±1.0°C
50-60 Hz
±80 ppm/°C
±0.025°C/°C
±120 ppm/°C
±0.04°C/°C
100 ms
400 ms