Electrical Data; Conductors; Energy Saving Mode; Technical Data - Grundfos OD 401 Installation And Operating Instructions Manual

8. Electrical data

CU 401
Terminals
Cable
CU 401
A A
Y and
Y screen
(SH)
B B
+24 V +24 V
The cable must have at least two twisted pairs.
Pair 1: A and B.
Pair 2: 24 V and Y.
Recommended cable: According to VDE and DIN
standard, Li-YCY-2 x 2 x 0.5 mm
The cable outside a panel must be min. H05VV-F.
Note: Connect the screen and the Y lead from the
OD 401 to the Y terminal of the CU 401.

8.1 Conductors

Rigid conductors
Flexible conductors
without insulated ferrule
Conductor size
(American measurement)
Flexible conductors
with insulated ferrule.
With/without plastic collar

8.2 Energy saving mode

If the power supply fails, the system can be supplied
from an emergency supply (PU 102 + UPS battery
back-up).
In this situation, the operator display will change
over to energy saving mode 2 minutes after any but-
ton press. This means that the operator display is
switched off and the back light goes out.
Press the ok button to reactivate the operator display
and the back light.
The green indicator light is still on.
OD 401
Terminals
OD 401
A A
Y Y
B B
+24 V +24 V
Screen Screen
(SH) (SH)
2
.
2
0.2-2.5 mm
24-12 AWG
2
0.2-1.5 mm

9. Technical data

Supply voltage
24 VDC ±7% via CU 401.
Current consumption 24 V
• Normal operation: 79 mA.
• Energy saving mode: 45 mA.
Ambient temperature
• During operation: –20°C to +60°C
(must not be exposed to direct sunlight).
• In stock: –25°C to +80°C.
• During transportation: –25°C to +80°C.
Relative air humidity
From 5% to 95%.
Materials
Plastic type: Black PC / ABS.
Enclosure class
Not mounted: IP 20.
Mounted in plate/door: IP 55.
Mounted in cabinet
with wall mounting kit: IP 55.

10. Dimensions

30

11. Maintenance

The OD 401 is maintenance-free during normal use
and operation.

12. Disposal

This product or parts of it must be disposed of in an
environmentally sound way:
1. Use the public or private waste collection service.
2. If this is not possible, contact the nearest
Grundfos company or service workshop.
215
Subject to alterations.
13