Innovative Technology SR750i User manual

Specifications are subject to change without notice. No liability accepted for errors or omissions. 1
www.innovative.co.nz
Phone: [phone]
Fax: [phone]
NZ Freephone: 0800 654 668
AU Freephone: 1800 148 4 4
Email: [e-mail]
No-Break
TM
DC UPS with SNMP communications port
750W
SR750 i …. LAN+
User Manual
(optional V/I meter shown)
Please refer to separate user manual for full SNMP instructions

Specifications are subject to change without notice. No liability accepted for errors or omissions. 2
PSU = power supply unit BCT = battery condition test ECB = electronic circuit breaker
ELVD = electronic low voltage disconnect RPP = reverse polarity protection EMI = electromagnetic interference
Glossary of terms used in our user manuals
SNMP = Simple Network Management
Protocol
LAN = local area network
Safety
The user is responsible for ensuring that input and output wiring segregation complies with local standards and that in
the use of the equipment, access is confined to operators and service personnel. A low resistance earth connection is
essential to ensure safety and additionally, satisfactory EMI suppression (see below).
HAZARDOUS VOLTAGES E IST WITHIN A POWER SUPPLY ENCLOSURE AND ANY REPAIRS MUST
BE CARRIED OUT BY A QUALIFIED SERVICEPERSON.
Electrical Strength ests
Components within the power supply responsible for providing the safety barrier between input and output are con-
structed to provide electrical isolation as required by the relevant standard. However EMI filtering components could be
damaged as result of excessively long high voltage tests between input, output and ground. Please contact our techni-
cians for advice regarding electric strength tests.
Earth Leakage
The EMI suppression circuits causes earth leakage currents which may be to the maximum allowable of 3.5mA.
Ventilation
High operating temperature is a major cause of power supply failures, for example it has been well documented that a
10
o
C rise in the operating temperature of a component will halve its expected life. Therefore always ensure that there is
adequate ventilation for the equipment. Batteries and cooling fans also suffer shortened lifetimes if subjected to high
ambient temperatures - both should be included in a routine maintenance schedule to check for signs of reduced effi-
ciency.
Water / Dust
Every effort must be made in the installation to minimise the risk of ingress of water or dust. Water will almost always
cause instant failure. The effects of dust are slower in causing failure of electronic equipment but all electrical equip-
ment should be cleaned free of any dust accumulation at regular intervals. This is particularly important where internal
fans are fitted.
Electromagnetic Interference (EMI)
Switching power supplies and converters inherently generate electrical noise. All wiring should be as short as practica-
ble and segregated from all equipment wiring which is sensitive to EMI. Residual noise can be reduced by looping DC
wiring through ferrite cable sleeves. These are most effective as close to the power supply as possible and as many
turns of the wire taken through the core (+ and - in the same direction) as the core will accommodate.
Fuse ratings
Check that the wiring and fuses or MCBs match the rating of the PSU or converter. Adequate fuse protection of battery
circuits is very important owing to the large potential currents available from batteries. Our No-Break DC series has an
internal ECB for protection of the battery circuit but for all other charging situations should have an external fuse or cir-
cuit breaker fitted in the battery circuit.
Connection polarity
It is critical to check the polarity carefully when connecting batteries and equipment to DC power supplies and chargers.
Boost chargers (and some float chargers) made by Innovative Energies have reverse polarity protection, which can be
by an electronic switch (non-destructive) or an internal fuse which needs to be replaced if a battery is connected in re-
verse.

Specifications are subject to change without notice. No liability accepted for errors or omissions. 3
The No-Break ™DC power supply is designed to provide DC power to lead acid batteries for critical back up
applications. In addition to the normal features of the standard SR750C.. model, the SR750i….-LAN+ has
an ethernet communication interface using SNMP protocol to enable user monitoring of the power supply and
battery parameters and control of the battery condition test function.
No-Break™ SYSTEM BLOCK DIAGRAM
LOAD +
I
LOAD
AC MAINS
STANDBY
LED &
BUTTON
POWER
OK LED
BATTERY
SYSTEM
OK LED
MAINS FAIL /
POWER SUPPLY
FAIL ALARM
BATTERY
SYSTEM
FAIL ALARM
LED
ON
LED
ON
LED
OFF
ALARM
OFF
ALARM
OFF
LOAD -
BATTERY +
BATTERY -
NORMAL OPERATION
LOAD CURRENT < PSU MAX CURRENT
ELECTRONIC
CIRCUIT
BREAKER
POWER CONVERSION
BATTERY
MANAGEMENT
& ALARM
CIRCUIT
BATTERY
CURRENT
SENSE
OUTPUT VOLTAGE, CURRENT
LIMIT & BATTERY CHARGE
CURRENT CONTROL
I
C ARGE
BATTERY TEMP.
SENSOR
REVERSE
POLARITY
FUSE
The ECB is activated under the following conditions: 1. battery voltage drops below the Vdisco (1.66V/cell)
2. battery current overload (refer to graphs above)
The ECB will latch open only when there is no input power present. It will reset when input power is restored or can be manually
reset by briefly shorting the BAT- and LOAD- terminals together when there is no input power.
nput power on
OPERATION OF ELECTRONIC CIRCUIT BREAKER (ECB)
nput power off
Trip time
ms
2
300
System load current
(x I PSU rated)
2.5 6
ECB does not trip below 2.5x I PSU rated
Battery supplies max of 1.5 x IPSU rated
Trip time
ms
2
300
System load current
(x I PSU rated)
1.5 5
ECB does not trip below 1.5x I PSU rated
INTRODUCTION
Ethernet port

Specifications are subject to change without notice. No liability accepted for errors or omissions. 4
CONNECTION DIAGRAM
NOTES
1 Maximum current available
with input power present: 2.5 x rated PSU current
with no input power: 1.5 x rated PSU current
2 Reverse polarity protection
If the battery is connected in reverse, the internal battery protection fuse may be ruptured and the unit
should be returned to the manufacturer for repair. If the fuse is good, the voltage measured as at
step 3 above should be exactly the same on both the load and battery outputs.
3 Battery Condition Test (BCT)
BCT function is disabled on start up and is controlled via the SNMP interface.
4 BCT fail reset
If the system fails a BCT the BAT LOW alarm latches (de-energized state) until
either: both the mains power input and the battery are disconnected briefly
or: the system passes the next BCT.
1 Check input and output voltages of system, ensure that they match the equipment. All loads should be
isolated.
2 Check polarity of all wiring. Place temperature sensor probe near or on batteries.
3 Plug in input power. “ POWER OK” LED will light up. DC output voltage should appear at both load
and battery outputs.
4 Turn off input power.
5 Connect battery.
6 Check that ECB (internal electronic circuit breaker) closes by shorting together the BATTERY –ve and
LOAD –ve terminals briefly. Both LEDs will light up. If this does not happen, there is a fault in the wiring or
the internal battery protection fuse is ruptured (see Note 2 below). The battery voltage will then appear at
the load terminals and the “BAT LOW” alarm relay energises. The “POWER OK” LED stays on for about 30
seconds.
7 Connect load wiring to LOAD + and LOAD - terminals.
8 The system is now ready for operation.
Please refer to separate user manual for setting up the SNMP web interface.
SR ... i......-LAN+
=
~
ALARMS ethernet
comms
port
for
SNMP
LOAD
BATTERY
AC input
Temperature sensor to be
placed on or near battery
L+
B-
L+, B+ are linked internally and labelled COM
B+
L-
CONNECTION & INITIAL TESTING

Specifications are subject to change without notice. No liability accepted for errors or omissions. 5
AU : Relay is energized when the battery condition test is in progress
MAINS FAIL: Alarm indicates loss of input power after 30 sec delay.
BAT LOW: Relay is de-energized when either:
1. battery voltage = 1.8V/cell (for 2V cells) - operates only when no input power
present or
2. battery missing or fault in battery circuit wiring (alarm does not activate for up to
battery detection interval time).
For full list of LED flash codes please refer to page 7.
BATTERY SYSTEM OK: LED on: Battery present and above V batl.
POWER OK: LED on: Input power present
STANDBY: LED on: Charger in standby mode (no output from charger)
Warning: Do not put unit into standby mode during normal operation as
“BATLOW” alarm and low voltage disconnect are both disabled.
DIMENSIONS
304 mm
318 mm
328 mm
340 mm
70mm
77mm
225 mm
120 mm
NOTE: LOAD+ / BATT+ terminals
are linked internally and are con-
nected to the +COM terminal
Stud terminals
POWER
INPUT
ALARMS
+ COM LOAD- BATT-
LAN
TEMPCO
CONNECTION LAYOUT
FRONT PANEL LEDS (WITH BUILT IN SWITCHES)
ALARM RELAYS

Specifications are subject to change without notice. No liability accepted for errors or omissions. 6
Parameter
Nominal Voltage Default
Value
12V 24V 30V 36V 48V
*
1
V out = Output voltage 13.8 27.6 34.5 41.4 55.2 2.3V/cell
V pres = Voltage threshold for battery detec-
tion & battery condition test (BCT). If voltage
drops to this level during BCT then the test is
aborted and BATT SYS OK relay de-energises
12.2 24.4 30.5 36.6 48.8 2.03V/cell
V shutd = Output voltage of PSU during bat-
tery detection & BCT 11.5 23 28.8 34.5 46 1. 2V/cell
V batl = Battery low alarm voltage during
mains fail.
(BATT SYS OK alarm relay de-energizes)
11 22 27.6 33 44 1.84V/cell
V disco = Battery disconnect voltage during
mains fail 10 20 25 30 40 1.66V/cell
Bccl = Maximum charge current as % of rated PSU rated current *
2
Comms = communications mode of PSU: F = continuous data stream of status
M = responds only to request made by a controller M
BatDetect = Battery detection interval time, active only when no battery charge current is detected (the
unit may not detect a missing battery for up to this time) 60 min
BCT = length of battery condition test 20 min
Ret = retest option: N = after a failed BCT further scheduled BCTs are inhibited
Y = after a failed BCT further scheduled BCTs will be allowed Y
CC = Length of charge cycle in minutes/hours/days. ie. time between battery condition tests 40m/23h/
027d
MfiBCT = time before mains fail check during BCT. A mains fail during a BCT will stop the BCT. If set
longer than BCT time no mains fail check will occur. 30 min
NOTES:
*1 Output voltage is set by an internal potentiometer.
*2 Refer to ‘PSU Configuration’ page on website
SPECIFICATIONS (at 20 degrees C)

Specifications are subject to change without notice. No liability accepted for errors or omissions. 7
Battery
System OK
LED
Power OK
LED
Stand-by
LED
Battery
System
OK Alarm
Power OK
Alarm Condition
Normal Normal System Normal: Input power on, battery circuit is OK
Normal Normal Battery detection test in progress
Alarm Normal
Input power on, battery system fault:
1. Internal battery fuse has opened or
2. Battery circuit wiring open circuit, battery missing, ECB has tripped
Normal Alarm Input power off, battery system is OK (battery volts > Vbatl)
Alarm Alarm Input power off and battery has discharged to < V batl
Alarm Alarm Input power off, ELVD has activated and disconnected battery from load.
Normal Normal BCT is in progress: LEDs flash slowly
Alarm Normal Input power on, battery condition unserviceable- battery voltage < Vpres during a
BCT
Normal Normal PSU in standby, input power on, battery system OK
Alarm Alarm PSU in standby, input power present, battery missing.
Alarm Normal PSU in standby and system has failed previous BCT
LEGEND : =off =fast flash =on =slow flash
LED INDICATION CODES

Specifications are subject to change without notice. No liability accepted for errors or omissions. 8
• Remote monitoring of DC system via internet con-
nection
• BCT controlled via web page or SNMP MIB browser
• Includes all the features of our standard No-Break
DC UPS systems
• Separate outputs for load and battery
• Battery detection - regular battery presence and
battery circuit integrity checks
• Deep discharge protection for battery
• ECB for overload protection of battery circuit
• Fused reverse battery polarity protection
• Automatic temperature compensated output volts
• No-Break switching between PSU & battery
• LED flash codes for precise state indication
• Two alarm relay outputs standard + BCT relay
ENVIRONMENTAL
Operating
temperature
Storage temperature
Humidity
Cooling
♦ 24 Month Warranty
AC Input
Frequency
Fusing / Protection
Isolation
Efficiency
Inrush current
Output Power
Output Voltages
Voltage adj. range
Temp. Compensation
Current Limits
Line Regulation
Load Regulation
Noise
Drift
Hold-up time
Thermal Protection
OVP
Battery Condition Test
(BCT)
ELECTRICAL
230V AC: 180V - 264V (standard)
110V AC: 88V - 132V (on request)
45- 65 Hz
Input fuse
Output fuse & ECB for battery
1KV DC input - output / earth
> 85%
Soft start circuit
750W
13.8, 27.6, 34.5, 41.4, 55.2V
85 - 105% of Vout
Temperature sensor on 1.7m lead with adhe-
sive pad: -4mV / °C / cell ±10%
PSU: 100% rated current
Battery: 25-100% PSU current
<0.2% over AC input range
<0.4% open circuit to 100% load
<1%
0.03% / °C
15 - 20 ms (nom. - max. Vin) without battery
Yes, self resetting
Over-voltage protection on output
at ~ 130% of nominal output voltage
Settings to be specified at time of order.
Control of BCT is implemented using the
SNMP software.
BCT relay provided to control an external test
load. Please do not hesitate to ask our sales
staff for assistance with this feature.
0 - 50 °C ambient at full load
De-rate linearly >50 °C to no load @ 70 °C
-10 to 85 °C ambient
0 - 5% relative humidity non-condensing
Fan cooled
No-Break™ FUNCTIONS AND ALARMS*
Battery Charge Limit
Reverse Polarity
Battery Monitoring
Battery Protection
- low battery volts
- overload
- short circuit
Indication LEDs
Alarms
Alarm Relay contacts
Standby Mode
See Model Table for default settings -
may be increased to PSU rated current
Battery reverse connection will open internal
fuse (and produce alarm)
Detects for presence of battery on start up,
then every 60 minutes when charge current <
200mA
Electronic Circuit Breaker (ECB) operates
under the following conditions:
• battery voltage drops to 1.67V/cell -
auto reset
• < 300ms for load > 6 x rated PSU cur-
rent, allows ~1.5x rated PSU current
from battery without acting,
• < 2ms, backed up by fuse
Green: Battery System OK, Power OK
Red: Standby
• Power OK (Mains/PSU fail, standby
mode)
• Battery System OK - alarms when battery
voltage low (on mains fail) , battery miss-
ing, battery circuit wiring faulty, BCT fail (if
enabled)
C - NO - NC full changeover rated 1A /50V
DC, 32VAC
Turns off DC output of PSU & allows load to
run off battery
STANDARDS
EMI
Safety
to CISPR 22 / EN55022 class A
to IEC 50 / EN60 50 / AS/NZS3260
Optional internal V/I
meter shown
SPECIFICATIONS All specifications are typical at nominal input, full load and at 20°C unless otherwise stated.
With Ethernet (SNMP) communication port

Specifications are subject to change without notice. No liability accepted for errors or omissions.
750 Watt
No-Break™ DC charger for lead acid batteries
No-Break™ DC
MODELS
DC Output
Output (V) PSU Rated
(A)
Charge
Limit (A) *
1
Recomm.
Load (A)
Peak load on
power fail (A)
SR750 i 12 13.8 54 54 42 81
SR750 i 24 27.6 27 27 1 40
SR750 i 30 34.5 21 21 14 31
SR750 i 36 41.4 18 18 12 27
SR750 i 48 55.2 13.5 13.5 8.5 20
PHYSICAL
AC Input connector
DC Output Connections
Alarm Connections
Enclosure
Weight
Dimensions
IEC320 inlet socket
M8 brass stud or plug-in/ screw terminal
block (20A/ terminal)
Plug in/ screw terminal block
Powder coated steel
4.3kg
225W x 304D x 70H mm (excluding mount-
ing feet and terminals)
SCHEMATIC BLOCK DIAGRAM
STANDARD MODEL TABLE
ACCESSORIES SUPPLIED
Mounting feet together with screws
AC power cord 1.5m with IEC320 socket & AUS/NZ plug
Mating screw terminal plug for DC connector for ‘X’ version
Mating screw terminal plug for alarm outputs
Crimp lugs for ’S’ version
OPTIONS
19”Rack Mount
Wall Mount Enclosure
Parallel redundancy
Internal Digital V/I Meter
MODEL IDENTIFICATION CODES
SR750 i 12 T F S L-LAN+
2U sub rack option: add SR-RM2U
Optional V/I meter for subrack: SR-METER
PSU may be fitted into enclosure with MCBs
and terminals. Code: SEC-SR
Use external output diode, eg +P50. Please
refer to separate application notes.
Add code +INT-METER
SR ... i......-LAN+
=
~
ALARMS ethernet
comms
port
for
SNMP
LOAD
BATTERY
AC input
+
-
+
-
Temperature sensor to be
placed on or near battery
230V AC + switch = L 230V AC no switch = blank
110V AC + switch = U 110V AC no switch = G
110V DC + switch = H 110V DC no switch = J
Input voltage and front
panel standby switch:
Stud = S Phoenix combicon (plug in /screw terminal block) =
Output DC Connector type:
Fan cooled = F
Cooling
Yes = T No = blank
Temperature Compensation
12, 24, 30, 36, 48V DC output: Nominal voltage
i = No-Break™DC with communication port Function
Power 750W
Communication port: LAN+ = Ethernet (SNMP)
*1 charge current limit may be varied at
time of order

Specifications are subject to change without notice. No liability accepted for errors or omissions. 10
#1 1 x No-Break™DC charger and 1 x battery bank
This is the basic connection which is most commonly used, and provides
adequate protection for the majority of systems requiring DC back up in
the event of a mains power failure.
#2 1 x No-Break™DC charger and 2 x battery banks
The SR250xxxV No-Break™DC UPS is designed to provide superior
battery backup availability without having to use two power supplies.
Dual battery banks and automatic battery condition testing reduce the risk
of battery failure for critical applications.
Power OK YES
Battery Missing (B1&B2) YES
Battery Low (B1&B2) YES
Battery Condition Test Fail
(B1 & B2)
YES
Alarms Available
Power OK YES
Battery Missing YES
Battery Low YES
Battery Condition Test Fail YES
Alarms Available
#3 2 x No-Break™DC chargers and 2 x battery banks
2 x No-Break™DC chargers connected in parallel with separate battery
banks & output diodes. This solution provides an extremely high level
of redundancy for very critical applications, with redundancy of the
battery in addition to the power supply. The diodes isolate the units
from one another in the event of a short circuit appearing at the other
output and aid current sharing.
Power OK YES
Battery Missing YES
Battery Low YES
Battery Condition Test Fail*
1
YES
Alarms Available
INPUT
LOAD
BAT 1
BAT 2
BCT LOAD
=
ALARMS
COMMS PORT
L+
L-
B1+
B1-
B2+
B2-
RES
RES
SRxxxV
ECB
=
INPUT
L+
B-
L-
ALARMS
SRxxxC
B+
LOAD
ECB
SRxxxC
SRxxxC
ALARMS
ALARMS
L+,B+
L+,B+
B-
B-
L-
L-
INPUT
INPUT
LOAD
=
=
BAT
ECB
ECB
#4 No-Break™DC Connection for high peak loads
This is a basic connection which is used when there is a connected load
with a peak current greater than 1.5 times the rated current of the
charger. Standing loads are connected normally and an optional exter-
nal low voltage disconnect may be used for the peak load.
Power OK YES
Battery Missing YES
Battery Low YES
Battery Condition Test Fail YES
Alarms Available
=
PEAK
LOAD
BAT
ECB
INPUT NORMAL
LOAD
*LVD
* optional
L+,B+
B-
L-
ALARMS
SRxxxC
Single battery DC
backup system
N+1 redundancy for
batteries
N+1 redundancy for
charger and batteries Single battery DC
backup system for
peak loads
*
1
interlock circuit required for
automated BCT
No-Break DC & standard N+1 connections

Specifications are subject to change without notice. No liability accepted for errors or omissions. 11
#7 Standard AC/DC power supplies with alarms and
external diodes
#8 Standard AC/DC power supplies with internally fit-
ted diodes (applies only to SR100P and SR250P mod-
els with outputs >12VDC)
=
=
SRxxxD
SRxxxD
+
+
-
-
INPUT
INPUT
LOAD
ALARMS
ALARMS
-
+
SRxxxP
ALARMS
ALARMS
+
-
SRxxxP
=
=
INPUT
INPUT
LOAD
Power OK YES
Battery missing YES
Battery low YES
Battery condition test fail *
2
YES
Alarms available
#6 N+1 for No-Break™DC charger and N+1 for battery
bank (use this connection for high peak loads)
All No-Break alarms are available and the low voltage disconnect for the
peak load is optionally implemented with an external relay.
#5 N+1 for No-Break™DC charger and single battery
bank
This connection provides for redundancy of the charger and retains most
of the No-Break functions.
Power OK YES
Battery missing NO
Battery low YES
Battery condition test fail *
1
YES
Alarms available
SRxxxC
ALARMS
ALARMS
B+,L+
B+,L+
B-
B-
BAT
L-
INPUT
INPUT
=
ECB
L-
LOAD
ECB
=
SRxxxC
SRxxxC
ALARMS
ALARMS
B+,L+
B+,L+
B-
B-
PEAK
LOAD
BAT
L-
INPUT
INPUT
=
BAT
ECB
L-
NORMAL
LOADS
ECB
=
*1
*1
*1 OPTIONAL LVD
SRxxxC
No-Break DC connections (continued)
Standard N+1 redundant DC connections
*
2
interlock circuit required for
automated BCT
*
1
interlock circuit required for
automated BCT

Innovative Energies Limited
Phone: [phone]
Freephone: 0800 654 668 (New Zealand)
1800 148 4 4 (Australia)
Fax: [phone]
Email: [e-mail]
Online: www.innovative.co.nz or www.innovative-energies.com
In Person: 1 Heremai Street, Henderson, Auckland, New Zealand
By Post: PO Box 1 -501, Auckland 1746, New Zealand
TERMS OF WARRANTY
Innovative Energies Ltd warrants its power supplies for
24 months (two years) from date of shipment against
material and workmanship defects.
Innovative Energies' liability under this warranty is lim-
ited to the replacement or repair of the defective product
as long as the product has not been damaged through
misapplication, negligence, or unauthorized modification
or repair.
Thank you for purchasing from
Innovative Energies.
We trust your power supply will exceed
your expectations and perform for years
to follow.
Sincerely,
The Innovative Energies team.
21/11/2011 8:50 a.m.