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Danfoss AM-PBU 25 Operating instructions

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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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
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             
         
L
24 Vac power
LN
BT
Battery Test
RC
Remote Control
TG
Test Ground
C1
Common, Output 1
NC1
Normally Closed, Output 1
NC2
Normally Open, Output 1
AC
24 Vac output
C2
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
or
NC2
to terminal
3
on an actuator to drive the valve
stem down during power failure or to terminal
2
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
AM-PBU 25
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AM-PBU 25
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