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TR2 / TR4 24vdc Door Retainer Power Supplies
The TR range of power supplies are designed specifically for use with electromagnet door open
retainers such as used on fire doors. A 24vdc output is provided for direct connection to the door
retainer electromagnet.
A versatile remote control input permits flexible connection to various remote control sources to
switch off the output in the event of a fire alarm or other command, with the following options:
A. Removal of an External 24V dc supply – BS7273 Compliant
B. Normally Open going Closed volt-free contact
C. Normally Closed going Open volt free contact
Fully failsafe operation to the requirements of BS7273 Category A is provided with option 'A' i.e.
failsafe (output off) under the following conditions: Open or short circuit faults in wiring between fire
control system and release mechanism, faults in power supply.
LED status indicators provide quick diagnostics showing the presence of a mains input, and an output
fuse failure.
Note this power supply should NOT be used for charging standby batteries.
S
PECIFICATION
Input
Voltage
Current
Mains input fuse
Output
Voltage
Load Current
Load output fuse
Mechanical
Case material
Size
Weight
Environmental
Temperature - operating
Temperature - storage
www.acornfiresecurity.com
TR2
290mA maximum
T2.0A 20mm, 250Vac HBC
2A maximum
F2A 20mm, 250Vac glass
3.0Kg
-10 to +40
-20 to +80
www.acornfiresecurity.com
}
e.g. Fire Panel, Push Switch or Door Control Relay
230Vac, 50Hz nominal
T2.0A 20mm, 250Vac HBC
22- 30vdc dependent on load
1.2mm steel, white powder coated
230 x 200 x 80mm
O
C 95% RH non-condensing
O
C
TR4
500mA maximum
4A maximum
F4A 20mm, 250Vac glass
3.5Kg
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Summary of Contents for Acorn TR2
- Page 1 TR2 / TR4 24vdc Door Retainer Power Supplies The TR range of power supplies are designed specifically for use with electromagnet door open retainers such as used on fire doors. A 24vdc output is provided for direct connection to the door retainer electromagnet.
- Page 2 www.acornfiresecurity.com ONNECTIONS OUTPUT Switched 24Vdc output to door retainers/magnets CONTROL I/P Configurable Control Input – See options A, B & C Green LED Mains Present Yellow LED Output fuse blown This unit is only suitable for installation as permanently connected equipment and must be used with DC appliances only.
- Page 3 www.acornfiresecurity.com AINTENANCE There is no regular maintenance required of the PSU. If the output of the PSU fails the cause of the failure should be investigated e.g. short circuit load. The fault should be rectified before restoring power to the PSU. The following fuses may need to be replaced.
- Page 4 www.acornfiresecurity.com Option C: Normally Closed Contact going Open to switch Off output J1 - Jumper Settings for Note: In this mode CONTROL I/P is not polarity conscious Normally Closed Trigger operation Door Holder(s) OUTPUT CONTROL I/P The packaging supplied with this product may be recycled.Please dispose of packaging accordingly. www.acornfiresecurity.com...
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