Danfoss VLT® Relay Unit Pump Controller VLA31 Installation guide

Danfoss
Brand
Danfoss
Model
VLT® Relay Unit Pump Controller VLA31
Type
Installation guide

This manual is also suitable for

Danfoss VLT® Relay Unit Pump Controller VLA31

The Danfoss VLT® Relay Unit Pump Controller VLA31 is a versatile device designed to provide reliable control of your pump system. This relay module offers a range of features and capabilities to enhance the functionality and safety of your pump operation.

Key Features:

  • 5 Relay Contacts: Provides independent control of up to five pumps or other devices.
  • 24V DC Voltage Supply: Powers the VLA31 unit, ensuring compatibility with various power sources.
  • LED Indicators: Six LEDs provide real-time status information, including power supply status and relay activation.

Danfoss VLT® Relay Unit Pump Controller VLA31

The Danfoss VLT® Relay Unit Pump Controller VLA31 is a versatile device designed to provide reliable control of your pump system. This relay module offers a range of features and capabilities to enhance the functionality and safety of your pump operation.

Key Features:

  • 5 Relay Contacts: Provides independent control of up to five pumps or other devices.
  • 24V DC Voltage Supply: Powers the VLA31 unit, ensuring compatibility with various power sources.
  • LED Indicators: Six LEDs provide real-time status information, including power supply status and relay activation.
MI.58.E3.02 - VLT is a registered Danfoss trademark
VLT
Relay unit for pump controller
VLA 31
Instruction
Drives and Controls
MI.58.E3.02 - VLT is a registered Danfoss trademark
2
Relay unit for pump controller VLA 31
Relay unit for pump controller VLA 31
This relay module for VLA 31 is avalilable in IP20.
The connecting drawing on page 2 must be followed.
The DC voltage supply for VLA 31 has been changed
from 15 V to 24 V, and 6 light emitting diodes have
been mounted on the frontplate of the relay module:
■ The LED “POWER” lights up, if the supply voltage
is OK and the fuse protecting the DC voltage
supply is intact.
■ The LED’s 1-5 light up, when the relays of the
corresponding numbers are energized.
New code numbers
Relay module 190Z4140
Wall mounting brackets 175U0599
Fuse for voltage supply (0.2 A) 984B3002
Fuse for relay protection (5 A) 984B3069
Technical data
Supply voltage 100, 115, 220, 240 V, 50/60 Hz
Voltage supply for VLA 31 24 V
---
Number of relay contacts 5
Max. contact load 250 V ~ , 2 A
Ambient temperature operation -20°C to +40°C
Storage -40°C to +70°C
RFI suppression EN55014
Enclosure IP10 (VBG 4)
Between supply and DC output 3.6 kV ~ for 1 min
Test voltage Across relay contacts 2.5 kV ~ for 1 min
Between terminals and chassis 2.5 kV ~ for 1 min
Weight 1.1 kg
Dimensions
Quick Action
↓↓
↓↓
↓
3
MI.58.E3.02 - VLT is a registered Danfoss trademark
Relay unit for pump controller VLA 31
Electrical connection
Indication of blow of fuses
■ If the built-in 0.2 A fuse (quick action) protecting
the DC voltage supply blows, the LED “POWER”
does not light up though the supply voltage is OK.
■ If the built-in 5 A fuse protecting the relay contacts
blows, all the relay contacts are disconnected.
Relay unit for pump controller VLA 31
Pressure
transmitter
175U0027
Danfoss can accept no responsibility for possible errors in catalogues, brochures and other printed material.
Danfoss reserves the right to alter its products without notice. This also applies to products already on order provided that such
alterations can be made without subsequential changes being necessary in specifications already agreed.
© Danfoss A/S (TG-MC) 8.95 DTP L9
MI.58.E3.02
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Danfoss VLT® Relay Unit Pump Controller VLA31 Installation guide

Danfoss
Brand
Danfoss
Model
VLT® Relay Unit Pump Controller VLA31
Type
Installation guide
This manual is also suitable for

Danfoss VLT® Relay Unit Pump Controller VLA31

The Danfoss VLT® Relay Unit Pump Controller VLA31 is a versatile device designed to provide reliable control of your pump system. This relay module offers a range of features and capabilities to enhance the functionality and safety of your pump operation.

Key Features:

  • 5 Relay Contacts: Provides independent control of up to five pumps or other devices.
  • 24V DC Voltage Supply: Powers the VLA31 unit, ensuring compatibility with various power sources.
  • LED Indicators: Six LEDs provide real-time status information, including power supply status and relay activation.
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