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"PR1" Buffer Battery
Warnings
• The installation, testing and set-up of automation devices for doors and gates
must be performed by qualified and experienced personnel who must also
determine the type of tests required based on the risks involved, and ensure
that laws, standards and regulations in force are complied with.
• MHOUSE disclaims responsibility for any damage resulting from improper use
of the product; the only use authorized by the manufacturer is the one
described in this manual.
• The packaging materials must be disposed of in compliance with the regula-
tions locally in force.
• The buffer battery must not be immersed in water or any other liquid sub-
stances. If liquid substances should penetrate inside the device, disconnect it
from the automation system immediately and call MHOUSE customer service;
using the device under these conditions could be hazardous.
• Do not place the buffer battery near heat sources or expose it to open flames;
this could damage the device and cause malfunctions, fire hazards or other
dangers.
• In case of prolonged inactivity, to avoid the possibility that harmful substances
may leak from the buffer battery, the latter should be disconnected from the
automation system and stored in a dry location.
Description and Intended Use
The PR1 buffer battery (Fig.1) may only be installed in gate automation systems
equipped with MHOUSE control units. The battery enables the storage of ener-
gy while the automation is powered by the electrical mains, energy that is
returned to the system in the event of a power failure (buffer operation); it enables
approximately ten gate activations in the absence of power from the electrical
mains.
Depending on the type of automation, when the system is powered by the buffer
battery the movements may take place at "slow" speed even if the "fast" speed
was selected.
Installation
Warning: the power supply to the system must be disconnected during instal-
lation of the PR1 buffer battery.
• Depending on the type of automation, remove the protection that covers the
battery connector: [A] for SL1 automation (Fig.2); [B] for WU2, WK2, WG2
automations (Fig.3) or [C] for GD2 automation (Fig.4).
• Insert the battery in its designated housing: for SL1 automation (Fig.5); for
WU2, WK2, WG2 automations (Fig.6) or for GD2 automation (Fig.7).
• Using the cable provided for this purpose, connect the buffer battery connec-
tor to the connector in the control unit: for SL1 automation (Fig.8); for WU2,
WK2, WG2 automations (Fig.9) or for GD2 automation (Fig.10).
Warning: plug the smaller connector into the buffer battery and the larger one
into the control unit; no polarity needs to be observed when plugging in the
connectors.
Technical Characteristics
PR1 is produced by NICE S.p.a. (TV) I, MHOUSE S.r.l. is an affiliate of the Nice
S.p.a. group.
Nice S.p.a., in order to improve its products, reserves the right to modify their
technical characteristics at any time without prior notice. In any case, the man-
ufacturer guarantees their functionality and fitness for the intended purposes.
Note: all the technical characteristics refer to a temperature of 20°C.
PR1 buffer battery
Note: the performances of lead-acid storage batteries are affected by their oper-
ating conditions: temperature, absorbed current, state of charge and age of the
storage battery may cause significant variations in the data shown below.
Type: 24V battery kit, complete with battery charger, suitable for powering gate
and door automation systems in the event of mains power failures.
Technology adopted: Storage of electrical power by means of maintenance-
free hermetic lead-acid storage batteries
Charge/discharge voltage: 28V at maximum charge; 16V at maximum dis-
charge (when it is totally exhausted, the battery is disconnected automatically)
Current delivered: Rated 4A; 7.5A for 3 seconds, starting current
Storage capacity: 1.2Ah, corresponding to an autonomy of approximately 12
hours with the automation system in stand-by mode; or 5 minutes with a load of
4A corresponding to an average of at least 10 manoeuvres
Operational Checks and Testing
The following tests should be carried out immediately after connecting the bat-
tery to the control unit.
• Make sure that the "L2" LED (Fig.1) is on, showing that the battery is supply-
ing energy to the system. Make sure that the different LEDs on the control unit
signal that the latter is operating properly.
• If these things do not occur it probably means that the battery is completely
exhausted; in this case proceed to the next step and wait a few hours with the
automation system powered by the mains before you test the operation of the
battery again.
• Connect the automation system to the mains power supply and see whether
the "L1" LED (Fig.1) lights up to signal that the battery is recharging correctly.
• Activate at least one opening and closing manoeuvre to make sure that the
system operates properly when it is powered by the electrical mains.
• Disconnect the automation system from the electrical mains; make sure that
the "L2" LED (Fig.1) lights up, then activate at least one opening and closing
manoeuvre to make sure that the system operates properly also when it is
powered by the battery.
Note: depending on the type of automation, when the system is powered by the
buffer battery the movements may take place at "slow" speed even if the "fast"
speed was selected.
• At the end of the tests, reconnect the automation to the electrical mains.
Maintenance, Storage Battery Replacement, Disposal
The PR1 buffer battery does not require any maintenance; however, in case of
long periods of inactivity, it should be disconnected from the system and stored
in a dry location.
Storage batteries should be replaced whenever their autonomy is significantly
reduced as a result of aging. This operation may only be performed by qualified
technicians; please contact MHOUSE customer service.
WARNING: storage batteries contain lead and other polluting substances; cer-
tain electronic components may contain polluting substances: do not dispose of
them with other common waste. Use the disposal methods established by the
regulations locally in force.
Complete recharge time: Approximately 16 hours
Storage battery life: Estimated at 4 ÷ 6 years; or, over 1000 cycles for 30%
discharge depth, over 500 cycles for 50% discharge, over 200 cycles for 100%
discharge.
Ambient operating temperature: -20 ÷ 50°C (storage battery efficiency
decreases at lower temperatures: at -10°C efficiency is 30%; storage battery life-
time decreases at higher temperatures: at 40°C, lifetime expectation could be
reduced to 2 years.
Use in acid, saline or potentially explosive atmosphere: No
Mounting and connections: Installation in the compartments provided in the
control units or gearmotors. Connection via supplied cable.
Protection class: IP30 (to be used only inside control units or gearmotors or
other protected environments)
Dimensions / weight: 104 x 53 h 143mm / 1450g
L1
L2
Fig. 1
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