Danfoss AM-PBU 25 Operating instructions

Brand: Danfoss

Model: AM-PBU 25

Type: Operating instructions

Instructions

AM-PBU 25

7369082-0 SIBC 06 / 04 VI.AE.P1.02

1 (2)

Description

AM-PBU 25 is a standby power supply for AME 55 and AME 85 actuators. It will drive the actuators to open or closed

position during a power failure. The AM-PBU 25 can power one AMV(E) 85/86 or two AMV(E) 55/56 actuators.

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24 Vac power

System neutral

Battery Test

Remote Control

Test Ground

Common, Output 1

NC1

Normally Closed, Output 1

NC2

Normally Open, Output 1

24 Vac output

Common, Output 2

NC2

Normally Closed, Output 2

NO2

Normally Open, Output 2

Installation

1. Connect the VMS25 to the actuator(s) as shown.

Connect

NC1

NC2

to terminal

on an actuator to drive the valve

stem down during power failure or to terminal

to drive the valve

stem up during a power failure.

2. Connect AM-PBU 25 to 24 volts ac power.

3. Connect the red wire to the battery positive (+) and the black

wire to the battery negative (-).

Note: Connect the 24 volt power to the AM-PBU 25 before connecting

the battery. Connecting the battery  rst causes the AM-PBU 25 to go

into the power failure mode.

AM-PBU 25

2(2)

Testing the AM-PBU 25 and the battery

The jumper between LN & RC can be replaced by a connection to a

Building Management System (BMS), a controller or a manual switch. When

the contact opens, the mains power is disconnected and the AM-PBU 25

goes through a cycle, running on battery power. This feature can be used

for remote control of the valve or for testing of the battery.

Connecting terminals TG (-) and BT (+) to a BAS or volt meter and taking

a reading just after an exercise cycle, gives a good indication of battery

condition. At the end of the cycle (6.5 minutes), the battery should not be

below 10 V.

When the connection between LN & RC is restored the AM-PBU 25 will

charge the battery with 13 - 14 volts dc wich can be veri ed on terminals

TG & BT.

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AM-PBU 25

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AM-PBU 25

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Danfoss AM-PBU 25 Operating instructions

Danfoss AM-PBU 25 Operating instructions

Danfoss AM-PBU 25 Operating instructions

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