Technical data

Electrics
35
POWER MODULAR SYSTEMS-
PMS2000GC and PMS2000GP
The Power Modular System is a 240 volt ac
and 12 volt dc power control unit. It provides
all the necessary features for control of the
electrics and security in a caravan. The unit
provides the following features:
Mains 240v ac - Mains Module
with • Earth leakage protection
• Overcurrent protection (RCD)
• Reverse polarity indication
12 volt dc - Fully Automatic
Transformer/Charger
with • Overcurrent protection
• Short circuit protection
Alarm Module
with • Programmable keypad
• Motion sensor
• Tilt sensor
• Tow vehicle detection
• F.N.C.
Indicator Module
with • Battery/water test switch
• Battery charger switch
• Water pump switch (Int./Ext.)
• Internal and External “Pump
Running” indicator lights
• Water auto-fill switch
• Car/Van battery switch
• “Pump Running” indicator
• Heater 'ON', heater “fault” and
“low voltage” indicators (GC only)
Switch Module
with • Battery charger switch
• Car/Van battery switch
• Water pump switch (Int./Ext.)
• Battery/Water Test Switch
• Water heater switch
• Water/Water & heating switch
• Ignition 'ON' switch
• 1kW switch
• 2kW switch
Fuse Module
with • 8 fused dc output circuits
UNIT DESCRIPTION
Mains Module
The PMS2000 and PMS2500 is designed to
operate on a mains supply of 207-253 volts
ac (making it ideal for use with low
continental voltages). The 40 amp RCD
(Residual Current Device) gives protection
against earth faults and also acts as the main
switch. The mains module also has three
MCB’s (Miniature Circuit Breakers) which are
basically resetable mains fuses, to protect
against overcurrent. Allocation of the MCB’s
is as follows:
MCB1 - Sockets/Fan Master (if fitted)
MCB2 - Cascade/Lights (if fitted)
MCB3 - Fridge/Charger
Polarity Indicator
This red neon light mounted below the mains
module will illuminate if the mains input to
the unit has become reversed and will require
correction. Note: this indicator may illuminate
whilst using certain generators, this is quite
normal and safe.
Using a generator
When using a generator in conjunction with
the PMS the following must be observed,
failure to do so may result in damage to the
unit:
i) Always start the generator with the mains
isolator in the caravan turned OFF.
ii) Allow the generator to warm up for a few
minutes before energising power in the
caravan, as the output voltage can be
higher when cold.
iii) Check the generator output voltage
regularly to ensure it is within the
specification of the PMS system
(i.e. 230 volts ±10%).
Transformer/Charger
The PMS2000 employs a fully automatic
mains to 12 volt dc transformer and battery
charger, able to operate with a wide range of
input voltages and provide a stable output
voltage even under load. The unit can
provide up to 12 amps maximum, after which
it will begin to shut down to protect itself.
Battery/Water Level Meter
(PMS2000GC and PMS2000GP)
This meter indicates the amount of fresh
water remaining in the inboard water tank