(1) General
This unit employs many novel features previously unavailable in an industrial power supply. It has been designed to withstand the
high levels of interference found in heavy industry and has emission levels low enough for it to be used in residential, commercial
and light industrial environments.
The MPS20 has a high level of reserve power. This enables loads with significant inrush current to be supported and will also ensure
that circuit breakers will trip in the event of a short circuit.
For manual control of the output voltage, two push buttons are provided. Operation of the red “TESTSTOP” button will turn the
voltage off. Operation of the green “RESTART” button will turn it on.
WARNING!!
the output voltage always comes on when the supply is turned on.
An alarm contact is provided which will open as the unit approaches shut down due to overload or excessive temperature brought
about by lack of ventilation. If no action is taken and the temperature continues to rise, the unit will shut down but may be reset after
cooling by means of the “RESTART” BUTTON.
When the power supply is connected to the mains, there is no inrush current. The supply will monitor low supply voltage.
The power supply can be configured with DIP switches to work with battery back-up. A lead-acid battery can be held on float charge
with the alarm contact operating as low voltage release to prevent deep discharge.
(3) Features
[1]
Input terminal:
Conductor sizes
Solid
1,5 - 2,5 mm² / 16 - 14 AWG
Stranded
1,5 - 2,5 mm² / 16 - 14 AWG
Stranded with ferrule without / with plastic sleeve
1,5 mm² / 16 AWG
Ferrule minimum lenght must be
≥
10 mm
Tightening torque:
0,4 - 0,5 Nm / 5 - 7 lb. in.
[2]
“SHUTDOWN”-failure LED red
[3]
“RESTART”-start push button, green
[4]
“TESTSTOP”-test stop push button, red
[5]
Output “OK”-LED green
[6]
U-ADJ output voltage adjust trimmer
[7]
“CURRENT LIMIT”-current limit LED
[8]
DIP-switch to set operating mode
[9]
Alarm connection contact, removable
[10]
Output terminal:
Conductor sizes
Solid
4 - 10 mm² / 11 - 7 AWG
Stranded
4 - 10 mm² / 11 - 7 AWG
Stranded with ferrule without / with plastic sleeve
4 mm² / 11 AWG
Ferrule minimum lenght must be
≥
12 mm
Tightening torque:
1,2 - 1,5 Nm / 11 - 13 lb. in.
Extra parts
[11]
Screw fixing set Art No. 89500
(4) Operating modes
Conventional power supply
The factory setting is for conventional power supply operating
mode
[12]
with a no load voltage 24,15 volts. DIP switches 1 and
3 are ON, 2 and 4 are OFF. Continuous overload, high ambient
temperature or a load current greater than 26 amps taken for longer
than 400 ms, will cause the unit to trip into the RESTART mode.
As the unit approaches shutdown, a pre-warning will be given by
the alarm contact and the yellow “CURRENT LIMIT” led
Battery backed power supply
The battery backed power supply
[13]
can be set by changing the
DIP switches 2 and 4 to ON and 1 and 3 to OFF. The load will be
energised by the power supply when the mains supply is on and
by the battery should the mains supply fail. If, due to overload, the
terminal voltage falls below 19 volts, the power supply trips to the
RESTART mode. The alarm contact will release the low voltage
relay and isolate the battery from the load. If due to mains failure,
the battery discharges to below 19 volts, the alarm contact will
release the low voltage relay and prevent deep discharge of the
battery. When the mains is restored, the power supply will start
automatically and the battery will be charged with the residual
current available after the load is supplied (I
bat
= I
max
- I
load
)
(5) Location
The power supply should be mounted horizontally (connection
terminals facing downwards). The power supply is cooled by
natural convection. It is important to maintain clearance
dimensions equal to or greater than the minimum shown on the
diagram
[14]
to ensure best performance and long term reliability.
Side clearance to other equipment should be 25 mm or >50 mm if
that equipment is heat generating. The ambient temperature
should be measured on the underside of the unit. There will be an
increase of 20°C at the top. If natural convection is restricted,
forced cooling should be used. Mounting should comply with EN
60950-1 point 4.7 and 4.6.1. Protection class IP20 (EN 60529).
(6) Mounting
Rail mounting [15]
The rail should be fixed solidly. The two 20 mm diameter washers
supplied should be fitted under the screws and will help to prevent
distortion of the rail. Mounting instructions
[16]
, / Removing
instructions
[17]
.
Screw fixing [18]
A pair of fixing brackets, Art. No. 89500 must be attached to the
power supply with the screws provided. The keyhole brackets will
accept four M5 screws. (Screws are included)
(7) Switching on - conventional power supply
Factory set, ready to use. Check 10 and 11 for parallel and series
connection.
(8) Switching on - battery backed power supply
(lead acid)
Check the recommendations of float charge voltages from the
specification of the battery manufacturer. If the values are not
available,
the
float
charge
voltages
can
be
set
with
U-ADJ.-adjustment potentiometer as follows:
For maximum lifetime, the battery temperature should not exceed
35°C and must never exceed 40°C. NiCd batteries must not be
used.
The low voltage release relay and the battery fuse modules
available are:
Always use the correctly sized fuse or circuit breaker and connect
as near to the battery as possible. Ensure that the battery
compartment is ventilated. The power supply can be damaged
by wrong battery polarity. See connections
[25].
When the mains
is disconnected, the power supply and the low voltage release
relay discharges the battery by Art. No. 89510 / 150 mA and Art.
No. 89513 / 700 mA.
(9) Loading capacity
The nominal current is 20 A but due to the nature of industrial
loading, the power supply has been designed to support loads
with high inrush currents without damage or shutdown. Curve
[19]
shows the typical voltage / current curve. Curve
[20]
shows
the voltage / current response to dynamic 50 ms load. Curve
[21]
shows the voltage / current response to a dynamic 400 ms
load. Curve
[22]
shows the overload / temperature limit. To
ensure correct convection cooling, the unit must always be
mounted with the terminals at the bottom.
(10) Parallel connection
[23]
Up to 3 units may be connected in parallel. The open circuit
voltage of each unit should be set to same value. Accuracy of
setting will determine how well the units share the load current.
The gauge and lenght of the cable between each power supply
and the common point should be the same. Operation is based
on the electronically controlled 0.5% voltage / current slope.
Alarm contacts should be connected in series. By redundant use,
outputs must be connected through diodes, so that alarm
contacts will retain their function, Art. No. 896014. When using
a battery back-up, it is advisable to connect each power supply
to the battery positive terminal through it’s own 25 A fuse. Units
should only be used in parallel where the supply exceed 205
volts.
(11) Series connection
[24]
Up to 2 units may be connected in series to give either 48 VDC
or +/-24 VDC. Alarm contacts should be connected in series.
(12) Setting the output voltage
The open circuit voltage is factory set to 24,15 VDC. Clockwise
rotation of the “U-ADJ” potentiometer
[6]
will increase the
voltage. If the setting exceeds 28 VDC, the overvoltage
shutdown protection could operate. If this happens, reduce the
setting and press the green “RESTART” button.
(13) Alarm contact
[9]
The alarm contact is closed during normal running and opens for
supply failure, low supply voltage, output short circuit, overload
pre-warning, high output voltage or low output voltage when used
in battery back-up mode
Note !!
The contacts can only be used on DC. Maximum 60 VDC
at 0,2 A. The resistance is approximately 3 - 6 ohms.
(14) Using circuit breakers on the power supply output
On short circuit, the power supply will trip, for example, the
following ABB-STOTZ circuit breakers:
-S201-C3A
-S201-Z10A.
(15) Standards
Electrical safety
EN 60950-1, UL 1950, UL 508, SELV
EMC
EN 61204-3, (2000), Emissions, Immunity
Immunity
EN 61000-4-2 (1995) ESD 4/8 kV
EN 61000-4-3 (1996) Rf-field 10 V/m
EN 61000-4-4 (1995) EFT/B 2/2/1 kV
EN 61000-4-5 (1995), Surge 2/4/0,5 kV
EN 61000-4-6 (1996) Cond. Rf 10 V
ENV 50204 (1995) Rf-field 10 V/m
Emissions
EN 55022 B, RF-emissions
EN 60204-1, 60 V / 1 s
We reserve the right to change this specification.
Product of the
PIP -
series
In order to take the best advantage of the features that this power
supply has to offer and to ensure long term reliability for your
equipment, please read these instructions carefully before installation
and use. They should be retained for future reference. This power
supply can be adapted to a lead-acid-battery and work with battery.
MPS20-230/24
SINGLE PHASE
Art. No. 85057
OPERATING INSTRUCTIONS
(2) Technical specification, Art. No. 85057
V1.3
Operation
Power Supply
Battery back-up power supply
Nominal voltage
200 - 240 VAC 50/60 Hz
Input voltage range
185 - 265 VAC 50/60 Hz
200 - 265 VAC 50/60 Hz
Input current, I
typ
4,0 A
rms
Inrush current
none
Efficiency, typ.
90%
Power factor, typ.
0,60
Low voltage shutdown
Yes
External fuse max.
16 A
Safety class
1
Output voltage
24 VDC (22 - 28 VDC)
24 - 28 VDC
Static regulation accuracy
+/-1%
Dynamic regulation accuracy, typ.
0->100%, 5% 1ms / 100%->5%, 5% 1ms
Start-up time
< 3,5 s / 200 VAC - < 2,5 s / 240 VAC
Hold up time of the output, typ.
> 10 ms / 230 VAC
Output current, cont60°C
20 A
Output current, cont40°C
24 A
Output current, transient 50 ms
30 A
Output current, short circuit < 400 ms
40 A
Output ripple
< 20 mV
rms
Overloading / temperature protection
Yes
Overvoltage shutdown
> 28,5 VDC
Overcurrent shutdown
26 A / 400 ms
No
Undervoltage shutdown
21 VDC typ.,(current controlled)
19 VDC typ.
Parallel use Uin > 205 VAC, 5% minimum load. Max. 3 units
Yes
Alarm contact, normally closed
0,2 A 60 VDC
Relative humidity
5 - 95% no condensing
Operating temperature
0°C - +60°C (0°C - +50°C UL)
Storage temperature
-25°C - +85°C
Protection class, EN 60529
IP20
Dimensions W x H x D; Weight
243 x 132 x 123 mm; 2,5 kg
Float charge
voltages 12 cells
The average long period temperature of the battery
+5°C 10°C 15°C 20°C 25°C 30°C 35°C 40°C
- maintenance
free batteries
28,0V 27,9V 27,8V 27,6V 27,4V 27,2V 27,0V 26,8V
- open lead batter-
ies
27,2V 27,1V 26,9V 26,7V 26,5V 26,3V 26,1V 25,9V
Art number
System size
Low voltage release relay
Battery fuse
20A
89510
89522
40A
89513
89524
N
L
200-240VAC
-
-
+
+
SWITCH MODE POWER SUPPLY
ART. NO. 85057
ART. NO. 85057
INPUT
INPUT: L/N/PE 200-240V 50/60Hz 4,0A
OUTPUT: 24V DC 20A
SELV
IP20
MPS20-230/24 SINGLE PHASE
SHUTD
O
WN
REST
A
R
T
TE
ST S
T
OP
OK
LIM
IT
CURRENT
CONT
A
C
T
SIGN
A
L
DC60V
/ 0.2A
24-28V
+
OUTPUT
DC24V/20A
U-A
D
J.
1
2
3
4
5
6
7
8
9
t 60 C
o
t 60 C
o
product of the
series
1
2
3
4
5
6
7
8
9
10
Art. No. 85057
Art. No. 89510
Art. No. 89522
243
276
262.5
230 VAC
230 VAC
230 VAC
(+/ - 24 VDC)
48 VDC
24 VDC
CAUTION
- Read instruction manual before installation
and use. Two operating modes available
- Risk of electric shock. Do not open the
case. No user serviceable parts inside.
ATTENTION
- Reportez-vous aux instructions de service
avant le montage et la mise en service de l'appareil.
Deux modes operatoires sont possibles
- Risque d'electrocution. Ne pas ouvrir l'appareil.
Ne contient pas de pieces interchargeables
par l'utilisateur
E200364
61 RM
E200364
61 RM
6
4
2
1
3
5
2
1
A1
A2
2
22-28 VDC
13
14
~
_
__
+
-
A1
A2
1
7
8
9
4
5
+
+
-
-
6
