Download (ia) UPS with Red Black White Blue Wires

Holville Pty Limited
Operating Instruction
Type 3 Input/Output Node
Operating Instructions for Type3 Ex m e (ia) UPS with Red Black White Blue
wires.
Document 100641 Revision 2
Prepared: GW Date: 14/1/14
Revision History:
Approved1: GW
Date: 14/1/14
Implemented: 14/1/14
Original
Issue 1 – (27/10/12) Addition of warning not to over- tighten cable glands to conditions of safe use and additional mechanical
damage items added to warranty.
Issue 2 – (14/1/14) Addition of system interconnection details
_________________________________________________________________
Certifications
1. AUS Ex 3531Ex
2. MDA Ex m e ia 14348
Description of Apparatus
 The UPS is fully encapsulated and may be located in a Group 1 Zone 1 hazardous area. The IS Power
Output is certified to AS2380.7-1987 as being Category ‘ia’.
 The UPS has an IP54 rating. (Some State regulations may require this UPS to be inside an enclosure of
at least IP55 rating.)
 The armouring of the mains cable is earthed to the UPS enclosure through the gland.
 The UPS contains at least one 7 Amp.hour battery which is recharged at the rate of 1.4 Amps while
mains power is applied to the unit. Most commonly the UPS is configured with either 7A.Hrs, 14A.Hrs
or 28A.Hrs battery packs.
 A parallel circuit to the battery charger also supplies the I.S. voltage and current limit circuitry so that
there is no delay in I.S. power output should the mains come on when the battery is flat.
 The UPS is factory configured for either 110V AC or 240V AC mains power as indicated on the UPS
label.
 The UPS can be optionally factory configured with a timer that switches off all UPS outputs when
mains power has not been applied for a specified amount of time. The timer is most often configured
to 20 or 40 minutes but may have been varied at customer request.
 The UPS can be optionally fitted with both an IS power output switch and an auxiliary on/off cable.
This cable can be used to connect the UPS to a remotely located on/off switch. For example, if the
UPS is contained in an enclosure, this cable can be used to locate an on/off switch outside the
enclosure.
Conditions of Safe Use
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1
The equipment has been assessed to the entity concept and accordingly the electrical parameters given
in the Certification Marking Label on the lid of the UPS must be taken into account during
installation. It is a condition of safe use that these parameters are not exceeded.
Only the Technical Director can approve this document
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Operating Instruction
The integral cable supplied with the Ex me version of the node must be terminated in a manner
suitable for the hazardous area in which the node is installed.
It is a condition of safe use that the mains input power shall not exceed 250V.
The Ex me version must not be used in the presence of acetic acid vapours.
The enclosure is provided with an M4 stud which must be used to Earth the enclosure via minimum
4.0mm2 cable.
The UPS must not be operated in ambient temperatures greater than 40 oC.
The cable glands must not be tightened further than as supplied by the factory because twisting of the
gland body may compromise isolation of the circuits from the chassis.
System Interconnection
A system with a Type 3 UPS or PSU may only be connected to another system with a Type 3 UPS or
PSU via the isolated I.S. signal outputs of LDC Nodes or via an Isolated Digital I/O connection.
The parallel connection of two 12.6V or four 6.1V LDC Node isolated signal outputs is considered in
their assessment.
A system with Type 3 Nodes may be connected to any other powered system via the optional Isolated
Digital I/O connection.
Operation
When the I.S. Power switch is turned on while mains power is on, the UPS will continuously supply I.S.
power. If the mains input is turned off while the I.S. Power Output switch is in the On position, the I.S.
power will continue to be on until either:
1. The UPS is switched Off
2. The timer period elapses (if the UPS has timed output)
3. The battery voltage drops below 10.7 Volts. (The power to the I.S. Power Output is automatically
turned off to prevent damage to the battery when it reaches 10.7V).
If an Auxiliary On/Off switch is fitted it operates in the same manner as the IS Power Switch.
Timed Operation
The UPS can be factory configured with a timed output and a timer reset switch. The timer reset switch
can be used to reset the timer back to its original value by pressing the button for at least 5 seconds. If the
timer reset switch is pressed when the UPS output has timed out, IS power will be reinstated for another
timed period. Short circuiting the timer reset switch has the effect of disabling the timer so that IS power
will remain on continuously until either the battery voltage reaches 10.7V or the UPS is switched off.
If the mains power is restored while the I.S. Power switch is on and after the timer has timed out, the I.S.
power will automatically come back on.
Status Indicator LEDs
These LEDs are visible through the circular window in the front face of the enclosure;
1. Mains On LED - Illuminated while mains power is connected to the UPS.
2. IS Power On LED - Illuminated while the IS Power Output is on.
3. Battery Charged LED - Illuminated when the battery voltage is at least 13.2V.
4. Temp./Current Limit LED - Illuminated when one of the current limiting stages reaches 70 oC due
to continuous short circuit and the stage turns off the output power. Check the external circuitry
for the source of overload. If there is no external overload (i.e. the light remains on when the UPS
IS Power Output is disconnected from external circuits) the UPS must be withdrawn from use and
returned to the factory for assessment.
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Holville Pty Limited
Operating Instruction
5. Voltage Reg.Failure LED - Illuminated when the first voltage regulator stage fails. The output
power is turned off to ensure that an unsafe condition doesn't arise. The UPS must be withdrawn
from use and returned to the factory for assessment if this occurs.
Connection Details
1. IS Power Output
The IS Power Output is floating (i.e. It is galvanically isolated from the mains input, the mains
earth and the UPS enclosure).
IS Power Cable
I.S. +12V
Red
I.S. 0V
Black
The White, Blue and Orange wires are not connected. The intrinsic safety entity concept
parameters for the IS Power Output have been determined by a spark test and vary according to
the configured UPS output. The parameters applicable to each UPS are printed on Certification
Marking Label on the lid of the UPS.
2. Optional IS Remote Connection (Timer Reset and Auxiliary On/Off)
The optionally fitted IS remote connection contains two pairs of wires. The first pair (Red,Black)
is the timer reset and is used to reset the timer operation of the UPS (see “Timed Operation”
above). The second pair (Blue/White) is used for an Auxiliary On/Off connection. It is paralleled
with the IS Power On/Off switch on the front face of the UPS, so if the auxiliary connection is
used then the UPS mounted switch should be left in the off position. The I.S. Power comes on
when the wires are short circuited. The drain on the battery is much less when the supply is turned
off at the switch rather than by the timer. If an auxiliary on/off switch is fitted but not wanted, the
wires should be insulated so they are open circuit.
The intrinsic safety entity concept parameters for the IS Remote Connection (both the Timer Reset
and Auxiliary On/Off wire pairs) are:
Ui = 18.9V, Ii = 80mA, Ci = 0uF, Li = 0mH
Uo = 18.9V, Io = 80mA, Co = 7uF, Lo = 70mH, L/R < 1179uH/
Timer Reset Switch
Aux Power On/Off Switch
IS Remote Cable
Red
Black
White
Blue
The orange wire is not connected.
3. Earth
The enclosure is provided with an M4 stud which must be used to Earth the enclosure via
minimum 4.0mm2 cable. The armouring of the mains cable is earthed to the UPS enclosure
through the gland.
4. AC Mains Input
The integral steel wire armoured mains cable must be terminated in a manner suitable for the
hazardous area in which the UPS is installed. It must be protected from damage.
~110Vor 240V AC
~110Vor 240V AC
Earth
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Mains Cable
Red
Black
Green/Yellow
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Holville Pty Limited
Operating Instruction
A 110V AC mains source should be in the range 105VAC to max.115VAC. A 240V AC mains
source should be in the range 230V AC to max.250VAC. It is a condition of safe use that the
mains input power shall not exceed 250V.
Mains Power Input Fuses
The fuses in an EX me UPS are fully encapsulated. Should the fuses blow the unit must be returned to
the factory for replacement.
Battery Charging
The battery pack inside the UPS contains at least one 12V sealed lead-acid battery with a capacity of 7
Amp.Hours. To recharge the battery pack from flat will take approximately 5-6 hours for each battery.
The battery charging circuit is connected to the mains transformer in parallel to the IS power output
circuit so while mains power is applied to the UPS the IS power output may supply a load even if the
battery is flat and being recharged.
Maximising Battery Life
The battery life (as defined by the point at which it has 60% of its original capacity remaining) depends
on its operating temperature and the number and depth of discharge/charge cycles. The battery charge
voltage automatically reduces as battery temperature increases to prevent out-gassing, but the UPS should
not be subjected to ambient temperatures greater than 40°C. The battery life should be between 18
months and 4 years depending on usage. The UPS can be returned to the manufacturer for replacement of
the battery. Allowing the battery to remain fully discharged for more than 7 days will severely shorten the
life of the battery.
1. When the UPS is turned off there is a residual drain on the battery of 1.5mA. When added to the selfdischarge of the battery, this results in the battery going flat from fully charged in 3 months if not
recharged. Damage to the cell plates may occur if the battery is not recharged within 1 week of being
fully discharged. When the UPS is being stored it is advisable to connect it to a mains supply
every 4 weeks until the battery charged LED indicator has been illuminated for at least 4 hours.
2. When the UPS is switched on there is a quiescent battery drain current of 32mA even if there is no
power being supplied to a load. Mains power should be restored within 6 days to prevent damage to
the battery pack.
3. To avoid accidental operation the optional IS remote connections should be insulated whenever the
UPS is in storage or being transported.
4. The UPS should be switched off when mains power is absent for more than a day to prevent battery
damage.
Warranty
The power supplies are covered by a 12 month return to factory warranty. The warranty does not cover:
1. Mechanical damage including damage to casing, glands or cables and damage to internal circuits
arising from mechanical damage.
2. Damage due to immersion.
3. Damage (including blown fuses) due to lightning strikes and/or mains electrical fluctuations
exceeding 115VAC or 250V Ac (whichever is applicable).
4. Battery damage
Mounting
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Holville Pty Limited
Operating Instruction
The UPS has a label that gives the required orientation in which the UPS must be mounted. This
direction must be followed. This is due to the orientation of the sealed lead-acid batteries which need to
have their valves on top for long term usage. If the UPS is intended to supply more than 800mA
continuously then the base of the UPS should be covered in heatsink compound before being mounted on
to its base plate. The operating temperature of the base of the UPS needs to be kept below 40degC. to
minimise IS Power Output voltage drop under load.
Storage and Transport
The IS Power Output terminals and the optional IS remote terminals should be insulated whenever the
UPS is in storage or being transported to prevent risk of damage to battery and current limit output stages
from continued short circuits.
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