Page 1
Cassette Style AC-DC Converters H Series
70 Watt AC-DC Converters H Series
Input voltage range 85...255 V AC
1, 2 or 3 isolated outputs up to 48 V DC
Class I equipment
• Universal input voltage range suitable for most AC
mains
• Efficient input filter and built-in surge and transient
suppression circuitry
• Outputs individually isolated
• Outputs fully protected against overload
Safety according to IEC/EN 60950
LGA
111
4.37"
3U
168
39
6.6"
1.54"
Summary
The H series of AC-DC converters represents a flexible
range of power supplies for use in advanced electronic systems. Features include high efficiency, reliability and low
output voltage noise.
The converter inputs are protected against surges and transients occuring at the source lines. An input over- and
undervoltage lock-out circuitry disables the outputs if the
input voltage is outside the specified range. The modules
include an inrush current limitation preventing circuit breakers and fuses from being damaged at switch-on.
All outputs are open- and short-circuit proof and are protected against overvoltages by means of built-in suppressor
diodes. The outputs can be inhibited by a logic signal applied to the connector pin 2 (i). If the inhibit function is not
used pin 2 should be connected to pin 23 to enable the outputs.
LED indicators display the status of the converter and allow
visual monitoring of the system at any time.
Full input to output, input to case, output to case and output
to output isolation is provided. The modules are designed
and built according to the international safety standard IEC/
EN 60950 and have been approved by the safety agencies
LGA (Germany) and UL (USA). The UL Mark for Canada
has been officially recognized by regulatory authorities in
provinces across Canada.
The case design allows operation at nominal load up to
50°C in a free air ambient temperature. If forced cooling is
provided, the ambient temperature may exceed 50 °C but
the case temperature should remain below 80 °C under all
conditions. Applying a derating factor, operation above
50°C with reduced output power is possible.
A temperature sensor generates an inhibit signal which
disables the outputs if the case temperature
limit. The outputs are automatically re-enabled when the
temperature drops below the limit.
Two dif ferent options are available to adapt the converters
to individual applications (D, V).
The modules may either be plugged into 19" rack systems
according to DIN 41494, or be chassis mounted.
Important: These products are intended to replace the
110H and the 230H units.
8TE
T
exceeds the
C
Table of Contents Page
Summary.......................................................................... 1
Type Survey and Key Data .............................................. 2
Type Key .......................................................................... 2
Functional Description...................................................... 3
Electrical Input Data ......................................................... 4
Electrical Output Data ...................................................... 5
Electromagnetic Compatibility (EMC) ............................ 10
Immunity to Environmental Conditions........................... 11
Mechanical Data ............................................................ 12
Safety and Installation Instructions ................................ 13
Description of Options.................................................... 16
Accessories.................................................................... 20
Page
Auxiliary Functions ........................................................... 8
Edition 1/04.2002 1/20
Page 2
Cassette Style AC-DC Converters H Series
Type Survey and Key Data
Table 1: Type survey
Output 1 Output 2 Output 3 Input Voltage Range and Efficiency 1Options
U
o nomIo nom
[V DC] [A] [V DC] [A] [V DC] [A] 85...255 V AC/47...63 Hz [%]
5.1 11 - - - - LH1001-2R 74 V2, V3
12.0 6 - - - - LH1301-2R 81 D1...D8
15.0 4.5 - - - - LH1501-2R 83
24.0 3 - - - - LH1601-2R 83
48.0 1.5 - - - - LH1901-2R 83
12.0 2.0 12.0
15.0 1.7 15.0
5.1 5.0 12.0 30.7 12.0 30.7 LH3020-2 78
5.1 5.0 15.0 30.6 15.0 30.6 LH3040-2 78
1
Efficiency at
2
Option V only for modules with
3
Outputs 2 and 3 unregulated.
Type Key
Type Key L H 2 5 40 -2 R D V
Input voltage range
Series .............................................................................. H
Number of outputs....................................................... 1...3
Output 1,
Single output modules ................................................... 01
Output 2 and 3,
Options and features:
1
Option D excludes option V and vice versa
2
Option V only for modules with
U
i nom
U
o nomIo nom
3
3
and
U
I
:
i
U
o nomIo nom
2.0 - - LH2320-2 81
1.7 - - LH2540-2 81
.
o nom
U
= 5.1 V .
o1
85...255 V AC .............................................. L
U
:
o1 nom
5.1 V ............................................................ 0
12 V ............................................................. 3
15 V ............................................................. 5
24 V ............................................................. 6
48 V ............................................................. 9
U
,
U
o2 nom
o3 nom
:
12 V ........................................................... 20
15 V ........................................................... 40
Ambient temperature range
T
:
A
–10...50°C................................................... -2
Output voltage control input
(single output modules only)....................... R
Save data signal (D1...D8, to be specified) D
ACFAIL signal (V2, V3, to be specified).......V
U
= 5.1 V
o1
U
...
i min
U
i max
1
1, 2
h
min
2
Example: LH1501-2RD3: AC-DC converter, input voltage range 85...255 V AC, providing one output with
15 V/ 4.5 A, equipped with an output voltage control input (R) and undervoltage monitoring (D3).
Edition 1/04.2002 2/20
Page 3
Cassette Style AC-DC Converters H Series
Functional Description
The input voltage is fed via an input fuse, an input filter, an
inrush current limiter and a rectifier to the input capacitor.
This capacitor sources a single transistor forward converter. Each output is powered by a separate secondary
winding of the main transformer. The resulting voltages are
rectified and their ripples smoothed by a power choke. The
control logic senses the main output voltage
U
and gener-
o1
ates, with respect to the maximum admissible output cur-
Y
N
29
rents, the control signal for the primary switching transistor.
This signal is fed back via a coupling transformer.
The auxiliary outputs
U
and
o2
U
are unregulated. Each
o3
auxiliary output's current is sensed and transferred to the
main control circuit using a current transformer. If one of the
outputs is driven into current limit, the other outputs will reduce their output voltages as well because all output currents are controlled by the same control circuit.
03084
2
i
5
D/V
Main control circuit
4
14
R
4
17
G
20
23
2
1
Input filter
32
P
26
1
Input fuse
2
Transient suppressor (VDR)
3
Inrush current limiter (NTC)
4
R input for LH 1000
3
Fig. 1
AC-DC converter block diagram
approx. 70 kHz
Forward converter
Current
limitation
output 3
Current
limitation
output 2
14
17
8
11
Y
Y Y
Edition 1/04.2002 3/20
Page 4
Cassette Style AC-DC Converters H Series
Electrical Input Data
General conditions:
–
T
= 25°C, unless
A
– Connector pins 2 and 23 interconnected, R input not connected.
Table 2: Input data
Input LH
Characteristics Conditions min typ max Unit
U
Operating input voltage
i
U
Nominal input voltage
i nom
I
Input current
i
P
No-load input power:
i 0
Single output
Double output 7 9
Triple output 7 9
P
Idle input power inhibit mode 2.5
i inh
3
I
Peak inrush current
inr p
t
Rise time
inr r
t
Time to half-value
inr h
R
Input resistance
i
2
R
NTC resistance 8000
NTC
C
Input capacitance 140 270 µF
i
U
Cond. Input RFI EN 55022 A
I RFI
E
Rad. Input RFI
I RFI
U
Input voltage limits 0 284 V AC
i abs
without any damage
1
With multiple output modules, all outputs, loadad with
2
Initial switch-on cycle. Subsequent switch on/off cycles increase the inrush current peak value.
3
I
= U
/(
inr p
4
R
Rs + R
i
= source resistance.
S
+
R
i
T
is specified.
C
)
NTC
I
= 0…
I
o
o nom
T
…
T
C min
C max
U
,
I
i nom
o nom
U
i nom
I
= 0 1 2.5
o1,2,3
Ui = U
i max
R
T
T
U
4
= 0 Ω
S
= 25°C
C
= 25°C 800 mΩ
C
,
I
i nom
o nom
85 255 V AC
230
1
0.44 A
300 µs
1600
I
.
o nom
42 A
B
rms
W
Input fuse
A fuse mounted inside the module protects the module
against severe defects. If operated from a DC source this
fuse may not fully protect the module when the input voltage exceeds 200 V DC! In applications where the converters operate at source voltages above 200 V DC an external
fuse or circuit breaker at system level should be installed.
Table 3: Fuse specification
Series Fuse type Fuse rating
LH slow blow SPT 2.5 A, 250 V
Input Under-/Overvoltage Lock-out
If the input voltage remains below approx. 60 V AC or exceeds approx. 280 V AC, an internally generated inhibit signal disables the output(s). When checking this function the
absolute maximum input voltage rating
fully considered (see table:
Input data
U
must be care-
i abs
). Between
U
and
i min
the undervoltage lock-out level the output voltage may be
below the value defined in table:
cal Information: Measuring and Testing
Output data
).
(see:
Techni-
Input Transient Protection
A VDR together with the input fuse and a symetrical input
filter form an effective protection against high input transient
voltages.
Inrush Current Limitation
The modules incorporate an NTC resistor in the input circuitry which – at initial turn on – reduces the peak inrush
current value by a factor of 5...10 to protect connectors and
switching devices from damage. Subsequent switch-on cycles within short periods will cause an increase of the peak
inrush current value due to the warming-up of the NTC resistor.
Inrush Current Peak Value
The inrush current peak value (initial switch-on cycle) can
be determined by the following calculation:
U
• √2
I
= –––––––––––––––
inr p
U
i rms
i rms
R
+
R
+
R
(
s ext
R
s ext
I
i
inr p
NTC
)
04001
R
R
i
NTC
C
i
Fig. 2
Equivalent circuit diagram for input impedance.
Edition 1/04.2002 4/20
Page 5
Cassette Style AC-DC Converters H Series
Electrical Output Data
General conditions
–
T
= 25°C, unless
A
– Connector pins 2 and 23 interconnected, R input not connected.
Table 4a: Output data
Output LH 1001 LH 1301 LH 1501 LH 1601 LH 1901
Characteristics Conditions min typ max min typ max min typ max min typ max min typ max Unit
U
Output voltage
o
U
Output overvoltage 7.5 21 25 41 85
o p
protection
I
Output current
o nom
I
Output current limit
o L
u
Output Low freq.
o
voltage
noise
D
U
Static line regulation
o U
D
U
Static load regulation
o I
4
u
Dynamic Voltage
o d
load deviation
regulation
4
t
d
a
Temperature
Uo
coefficient D
T
is specified.
C
1
Switch. freq.
Total
Recovery
time
U
/D
T
o
C
U
i nom
2
U
...
i min
T
...
C min
U
,
i nom
IEC/EN 61204
BW = 20 MHz
U
...
i min
U
i nom
I
o nom
U
i nom
U
i nom
I
↔ 1/2
o nom
IEC/EN 61204
U
...
i min
0...
I
o nom
5.1 V 12 V 15 V 24 V 48 V
,
I
o nom
5 5.20 11.76 12.24 14.70 15.30 23.52 24.48 47.04 48.96 V
0 11 0 6 0 4.5 0 3 0 1.5 A
U
T
I
o nom
i max
C max
11.44 6.24 4.68 3.12 1.56
6
1 5 610 510 410 210mV
30 50 60 100 50 80 30 50 20 40
60 200 70 200 75 200 75 200 35 150
U
i nom
...
U
i max
,
I
...0 50 150 150 150 150
o nom
±50 ±100 ±100 ±150 ±150 mV
±200 ±400 ±200 ±200 ±150
I
o nom
100 80 80 80 120 µs
U
i max
±1.0 ±2.4 ±3.0 ±4.8 ±9.6 mV/K
pp
Table 4b: Output data
Output LH 2320 LH 2540
Characteristics Conditions Output 1 Output 2 Output 1 Output 2
min typ max min typ max min typ max min typ max Unit
U
Output voltage
o
U
Output overvoltage 21 25 25 31
o p
U
,
I
i nom
o nom
U
,
I
i nom
o2/3
11.76 12.24 11.40 12.60 14.70 15.30 14.25 15.75 V
= 0 – 13.80 – 17.25
protection
I
Output current 0 2 0 2 0 1.7 0 1.7 A
o nom
I
Output current limit
o L
3
u
Output Low freq.
o
voltage
noise
Switch. freq.
2
U
...
i min
T
...
C min
U
,
i nom
IEC/EN 61204
BW = 20 MHz
U
T
I
o nom
i max
C max
2.08 2.08 1.77 1.77
6
Total
D
U
Static line regulation
o U
D
U
Static load regulation
o I
a
Temperature
Uo
coefficient D
1
If the output voltage is increased above
U
o
U
...
U
i min
i nom
o nom
i nom
o nom
i min
I
o nom
...
...0
...
i nom
U
i max
5
U
i max
U
through R input
o nom
U
I
U
I
U
/D
T
0...
C
control, the output current should be reduced accordingly so
that
P
is not exceeded.
o nom
2
See fig.:
3
Measured according to IEC/EN 61204 sub clause 3.10 with a
Output voltage Uo1 versus output currents.
2 x 12 V 2 x 15 V
1 5 1 5 0.5 5 0.5 5 mV
15 30 20 40 15 30 20 40
50 150 50 150 40 150 40 150
±50 ±80 ±60 ±80 mV
50
see: LH2320-2:
DUo2 (typ.) vs. I
o2
60
DUo2 (typ.) vs. I
see: LH2540-2:
±2.4 ±3.0 mV/K
probe according to annex. A of the same standards.
4
See fig.:
5
Condition for specified output. Other output(s) loaded with constant current
6
See:
Dynamic load regulation of U
I
=
I
.
o
o nom
.
o1
Technical Information: Measuring and Testing.
pp
o2
Edition 1/04.2002 5/20
Page 6
Cassette Style AC-DC Converters H Series
t
t
Table 4c: Output data
Output LH 3020 LH 3040
Characteristics Conditions Output 1 Output 2/3 Output 1 Output 2/3
min typ max min typ max min typ max min typ max Unit
U
Output voltage
o
U
Output overvoltage 7.5 25 7.5 31
o P
U
,
I
i nom
o nom
U
,
I
i nom
o2/3
5.00 5.20 11.40 12.60 5.00 5.20 14.25 15.75 V
= 0 – 13.80 – 17.25
protection
I
Output current 0 5 0 0.7 0 5 0 0.6 A
o nom
I
Output current limit
o L
3
u
Output Low freq.
o
voltage
noise
Switch. freq.
2
U
...
i min
T
...
C min
U
,
i nom
IEC/EN 61204
BW = 20 MHz
U
T
I
o nom
i max
C max
5.20 0.73 5.20 0.62
6
Total
D
U
Static line regulation
o U
D
U
Static load regulation
o I
a
Temperature
Uo
coefficient D
1
If the output voltage is increased above
U
o
U
...
U
i min
i nom
o nom
i nom
o nom
i min
I
o nom
...
...0
...
i nom
U
i max
5
U
i max
U
through R input
o nom
U
I
U
I
U
/D
T
0...
C
control, the output current should be reduced accordingly so
that
P
is not exceeded.
o nom
2
See fig.
Output voltage Uo1 versus output currents.
Parallel and series connection
Parallel connection of main outputs
The main outputs from any modules with equal nominal
voltage can be connected in parallel. It is important to assure that the main output of a multiple output module is
forced to supply a minimum current of approx. 10% of
to enable correct operation of its own auxiliary output(s). In
parallel operation, one or more of the outputs may operate
continuously in current limit which will cause an increase in
case temperature. Consequently, a reduction of the max.
ambient temperature by 10 K is recommended.
Parallel connection of the outputs from a double output
module (LH2320/2540)
Output one and two of the same double output module can
be connected in parallel without a minimum current requirement at the main output.
Parallel connection of the auxiliary outputs from a triple output module (LH 3020/3040)
Output two and three of the same triple output module can
be connected in parallel, if the outputs are decoupled with
diodes or the minimum current is ≥10% of
I
o nom
Note: Auxiliary outputs from different modules may not be
connected in parallel.
Series connection
Main or auxiliary outputs can be connected in series with
any other output of the same or another module. In series
connection, the maximum output current is limited by the
output with the lowest current limitation. Output ripple and
regulation values are added. Connection wiring should be
kept as short as possible. If ouput terminals are connected
together in order to establish multi-voltage configurations,
e.g. +5.1 V , ±12 V etc. the common ground connecting point
should be as close as possible to the connector of the converter to avoid excessive output ripple voltages.
5.1 V, 2 x 12 V 5.1 V, 2 x 15 V
1 5 0.5 5 1 5 0.5 5 mV
15 30 10 20 15 30 10 20
30 150 20 150 30 150 40 150
±30 ±150 ±30 ±150 mV
25
see: LH3020-2:
D
Uo2 (typ.) vs. I
o2
25
see: LH3040-2:
D
Uo2 (typ.) vs. I
o2
±1.0 ±1.0 mV/K
3
Measured according to IEC/EN 61204 sub clause 3.10 with a
probe according to annex. A of the same standards.
4
I
o nom
See fig.:
5
Condition for specified output. Other output(s) loaded with constant current
6
See:
U
I
o1
Dynamic load regulation of U
I
=
I
.
o
o nom
.
o1
Technical Information: Measuring and Testing.
o
u
/
I
o1 nom
o1d
t
d
D
U
r
u
o1d
D
t
d
1
0.5
0
<10 µs
<10 µs
Fig. 3
Control deviation of Uo1 d vs. dynamic load change
U
o1
U
o1 nom
1.0
.
.95
I
o nom
0.5
0
0.5
1.0 1.2
05022
I
oL1
I
oL2,IoL3
I
o1
I
o2
I
o
I
o nom
Fig. 4
Typical output voltage Uo1 versus output currents I
.
o
05131
U
,
I
pp
o3
r
Edition 1/04.2002 6/20
Page 7
Cassette Style AC-DC Converters H Series
Output voltage regulation of multiple output modules
Output 1 is under normal conditions regulated to
independent of the output current.
U
and
U
o2
U
o1 nom
are unregu-
o3
lated and depend upon their own load and the load on output 1.
[V]
U
13.5
13.0
12.5
12.0
11.5
11.0
o2
1.4
Io1 = 0%
1.8 2.2
I
Io1 = 100%
0.2
0
0.6 1.0
= 50%
o1
05133
I
o2
[A]
Fig. 5
LH2320-2:
U
13.5
13.0
12.5
12.0
11.5
11.0
Fig. 7
LH3020-2:
U
= 230 V AC
i
o2/3
0
D
Uo2 (typ.) vs. Io2 with different I
[V]
I
Io1 = 100%
0.2
D
U
o2/3
(typ.) vs. I
= 50%
o1
0.4 0.6
with different I
o2/3
I
o1
.
o1
= 0%
0.8
o1
U
= 230 V AC
i
05132
I
o2/3
.
[A]
Thermal Considerations
If a converter is located in free, quasi-stationary air (convection cooling) at the indicated maximum ambient temperature
T
A max
(see table:
Temperature specifications)
and
is operated at its nominal input voltage and output power,
the temperature measured at the
temperature TC
indicated value
the relationship between
(see:
Mechanical Data
T
after the warm-up phase. However,
C max
T
and
A
Measuring point of case
) will approach the
T
depends heavily on the
C
conditions of operation and integration into a system. The
thermal conditions are influenced by input voltage, output
current, airflow and temperature of surrounding components and surfaces.
T
is therefore, contrary to
A max
T
C max
an indicative value only.
Caution: The installer must ensure that under all operat-
T
ing conditions
table:
Temperature specifications.
remains within the limits stated in the
C
Notes: Sufficient forced cooling or an additional heat sink
allows
T
to be higher than 50°C (e.g. 65°C) if
A
T
C max
is not
exceeded.
At an ambient temperature
T
of 65°C with only convection
A
cooling, the maximum permissible current for each output is
approx. 50% of its nominal value as per figure.
Output Protection
Each output is protected against overvoltages which could
,
occur due to a failure of the internal control circuit. Voltage
suppressor diodes (which under worst case condition may
become a short circuit) provide the required protection. The
suppressor diodes are not designed to withstand externally
applied overvoltages. Overload at any of the outputs will
cause a shut-down of all outputs.
[V]
U
o2
16.5
16.0
15.5
15.0
14.5
14.0
I
0.8
= 50%
o1
1.2
Io1 = 100%
0
0.4
Io1 = 0%
1.6
2.0
Fig. 6
LH2540-2:
U
o2/3
17
16
15
14
13
D
Uo2 (typ.) vs. Io2 with different I
[V]
I
Io1 = 100%
0
0.2
= 50%
o1
0.4 0.6
o1
Io1 = 0%
.
U
= 230 V AC
i
Fig. 8
LH3040-2:
U
= 230 V AC
i
D
U
(typ.) vs. I
o2/3
with different I
o2/3
.
o1
Thermal Protection
A temperature sensor generates an internal inhibit signal
which disables the outputs if the case temperature exceeds
T
. The outputs are automatically reenabled if the tem-
C max
perature drops below this limit.
I
o/Io nom
Forced cooling
1.0
0.9
0.8
0.7
,
0.6
0.5
0.4
0.3
0.2
0.1
0
T
LH 2000
LH 3000
Convection cooling
A min
40 60 70 80
LH 1000
50
05142
Fig. 9
Output current derating versus temperature
T
05134
I
o2/3
C max
05135
I
[A]
o2
[A]
TA [°C]
Edition 1/04.2002 7/20
Page 8
Cassette Style AC-DC Converters H Series
Auxiliary Functions
i Inhibit for Remote On and Off
I
Note: With open i input: Output is disabled (
U
o
= off).
The outputs of the module may be enabled or disabled by
means of a logic signal (TTL, CMOS, etc.) applied between
the inhibit input i and the negative pin of output 1 (Vo1–). In
systems with several units, this feature can be used, for example, to control the activation sequence of the converters.
If the inhibit function is not required, connect the inhibit pin 2
to pin 23 to enable the outputs (active low logic, fail safe).
For output response refer to:
sponse
.
Vi~
Vi~
Hold-up Time and Output Re-
06115
Vo+
Vo–
I
inh
i
U
inh
Fig. 10
Definition of U
inh
and I
inh
.
Table 5: Inhibit data
Characteristics Conditions min typ max Unit
U
Inhibit input voltage to keep
inh
output voltage
I
Inhibit current
inh
U
U
= on
o
= off
o
U
i min
T
C min
U
= 0 –60 –100 –220 µA
inh
[mA]
inh
2.0
U
inh
= 0.8 V
1.6
1.2
0.8
U
= on
0.4
o
0
–0.4
–0.8
–50
–30 0–10
Fig. 11
Typical inhibit current I
...
U
i max
...
T
C max
U
= 2.4 V
inh
U
o
10 30 50
versus inhibit voltage U
inh
= off
06032
inh
U
inh
–50 0.8 V DC
2.4 50
[V]
0.95U
U
o nom
o nom
0.1
Output
0
U
i
t
r
t
f
t
h
Output Response
The reaction of the outputs is similar whether the input voltage is applied or the inhibit is switched low.
An output voltage overshoot will not occur when the module
is turned on or off.
1
0
Inhibit
Fig. 12
1
Output response as a function of input voltage (on/off
switching) or inhibit control
Table 6: Output response time tr and t
Type of Converter
LH1001-2R 3 17 3 17 5 25 ms
LH1301-2R 5 25 8 30 10 40
LH1501-2R 3 17 5 25 15 50
LH1601-2R 8 30 15 45 20 70
LH1901-2R 35 100 50 150 85 230
LH2320-2 10 40 15 50 25 80
LH2540-2 8 30 10 40 20 60
LH3020-2 30 85 45 130 75 210
LH3040-2 20 70 30 90 50 150
t
at
r
f
P
= 0 and
o
t
at
P
=
P
f
o
o nom
t
and
r
typ max typ max typ max
0
3
f
at
P
=
/4
o
Po nom
t
r
at
P
o = Po nom
t
05025
t
t
t
Unit
Conditions:
R input not used. For multiple output modules the figures indicated in the table above relate to the output which reacts
slowest. All outputs are resistively loaded. Variation of the input voltage within
Edition 1/04.2002 8/20
U
...
U
i min
does not influence the values.
i max
Page 9
Cassette Style AC-DC Converters H Series
R-Control for Output Voltage Adjustment
Note: With open R input,
U
≈
U
o nom
.
o
As a standard feature, single output modules offer an
adjustable output voltage identified by letter R in the type
designation.
U
The output voltage
nal voltage (
U
ext
adjustment range is approximative 0…110% of
output voltages
cording to:
U
/
U
o
Electrical Input Data
.
o nom
R
+
U
ext
can either be adjusted with an exter-
o1
) or with an external resistor (
U
>
U
o
, the minimum input voltage ac-
o nom
increases proportionally to
U
ref
4000 Ω
Vo1+
06087
+
–
R
or
R
). The
1
2
U
. For
o nom
G
Fig. 13
Voltage adjustment with external voltage U
a)
U
≈ 0...110 %
o
U
o nom
, using
U
ext
ext
between R (14) and
G (17):
U
U
≈ 2.5 V • –––––
ext
U
o
o nom
Caution: To prevent damage,
U
≈
U
o
o nom
U
should not exceed
ext
U
ext
• –––––
2.5 V
8 V, nor be negative.
R
2
U
ref
4000 Ω
R
R
1
G
Fig. 14
Voltage adjustment with external resistor R1 or R
b)
U
≈ 0...100%
o
U
o nom
G (17):
R
U
≈
U
o
c)
U
≈
o
• –––––––––––
o nom
U
...
o nom
R
+ 4000 Ω
1
U
o max
1
, using
Vo1+ (20):
U
=
U
o max
4000 Ω •
R
≈ ––––––––––––––––––––––––
2
U
≈ ––––––––––––––––––––––––––––––––
o
2.5 V • (
+ 10 %
o nom
U
2.5 V • (
R
2
• (
U
o
U
–
o
U
o nom
+ 4000 Ω) –
Caution: To prevent damage,
than 47 kΩ.
Note: R inputs of n units with paralleled outputs may be
paralleled, too, but if only one external resistor is to be
used, its value should be R
Vo1+
06088
+
–
, using
o nom
• 2.5 V •
R
between R (14) and
1
R
≈ ––––––––––
1
R
between R (14) and
2
– 2.5 V)
U
)
o nom
R
2
U
• 4000 Ω
o nom
R
should never be less
2
/n, or R2/n respectively.
1
2
4000 Ω •
U
-
o nom
U
U
o
o
Table 7a: R1 for U
U
= 5.1 V
o nom
U
[V]
o
R
[kΩ]
1
<
U
o
(conditions: U
o nom
U
U
[V]
o
o nom
= 12 V
R
i nom
[kΩ]
1
, I
, rounded up to resistor values E 96); R2 =
o nom
U
= 15 V
o nom
U
o
[V]
R
[kΩ]
1
U
o nom
U
[V]
o
= 24 V
R
[kΩ]
1
∞
U
o nom
U
[V]
o
0.5 0.432 2.0 0.806 2.0 0.619 4.0 0.806 8.0 0.806
1.0 0.976 3.0 1.33 4.0 1.47 6.0 1.33 12.0 1.33
1.5 1.65 4.0 2.0 6.0 2.67 8.0 2.0 16.0 2.0
2.0 2.61 5.0 2.87 8.0 4.53 10.0 2.87 20.0 2.87
2.5 3.83 6.0 4.02 9.0 6.04 12.0 4.02 24.0 4.02
3.0 5.76 7.0 5.62 10.0 8.06 14.0 5.62 28.0 5.62
3.5 8.66 8.0 8.06 11.0 11.0 16.0 8.06 32.0 8.06
4.0 14.7 9.0 12.1 12.0 16.2 18.0 12.1 36.0 12.1
4.5 30.1 10.0 20.0 13.0 26.1 20.0 20.0 40.0 20.0
5.0 200.0 11.0 44.2 14.0 56.2 22.0 44.2 44.0 44.2
Table 7b: R2 for U
U
= 5.1 V
o nom
U
[V]
o
>
U
o
R
[kΩ]
2
(conditions: U
o nom
U
o nom
U
[V]
o
= 12 V
, I
i nom
R
[kΩ]
2
, rounded up to resistor values E 96); R1 =
o nom
U
= 15 V
o nom
U
o
[V]
R
[kΩ]
2
U
= 24 V
o nom
U
[V]
o
R
[kΩ]
2
∞
U
o nom
U
[V]
o
5.15 464 12.1 1780 15.2 1470 24.25 3160 48.5 6810
5.20 215 12.2 909 15.4 750 24.50 1620 49.0 3480
5.25 147 12.3 619 15.6 511 24.75 1100 49.5 2370
5.30 110 12.4 464 15.8 383 25.00 825 50.0 1780
5.35 90.9 12.5 383 16.0 332 25.25 715 50.5 1470
5.40 78.7 12.6 316 16.2 274 25.50 590 51.0 1270
5.45 68.1 12.7 274 16.4 237 25.75 511 51.5 1100
5.50 61.9 12.8 249 16.5 226 26.00 453 52.0 953
13.0 200 26.25 402 52.5 845
13.2 169 26.40 383 52.8 806
= 48 V
R
= 48 V
R
[kΩ]
1
[kΩ]
2
Edition 1/04.2002 9/20
Page 10
Cassette Style AC-DC Converters H Series
Display Status of LED
U
OK
> 0.95…0.98U
o1
o1 adj
i
U
U
i uv
i min
U
i maxUi ov
06090
U
U
i abs
i
Fig. 15
LEDs
"OK"
and
"i"
status versus input voltage
Conditions: I
U
= undervoltage lock-out, U
i uv
£
I
o
o nom
, T
£
T
, U
£
C
C max
i ov
0.8 V
inh
= overvoltage lock-out
o1 adj
I
o nomIoL
T
C max
U
< 0.95…0.98U
o1
T
PTC threshold
+50 V
o1 adj
I
o
T
C
U
i inh
LED
"OK"
status versus output current
Conditions: U
"i"
LED
versus case temperature
Conditions: U
LED
"i"
versus U
Conditions: U
i min
i min
i min
inh
...
U
, T
£
T
, U
£
i max
C
C max
...
U
, I
£
I
I
o nom
o nom
, U
, T
i max
o
...
U
, I
£
i max
o
0.8 V
inh
£
0.8 V
inh
£
T
C
C max
OK
Uo1 > 0.95…0.98U
i
U
inh threshold
i
-50 V
LED off LED on
+0.8 V +2.4 V
LED Status undefined
Electromagnetic Compatibility (EMC)
A metal oxide VDR together with an input fuse and an input
filter form an effective protection against high input transient voltages which typically occur in most installations,
Electromagnetic Immunity
Table 8: Immunity type tests
Phenomenon Standard 1Level Coupling Value Waveform Source Test In Per-
Electrostatic IEC/EN 2 contact discharge 4000 V
discharge 61000-4-2 10 negative
(to case) discharges
Electromagnetic IEC/EN x antenna 20 V/m AM 80% n.a. 26…1000 MHz yes A
field 61000-4-3 1 kHz
Electrical fast IEC/EN 1 direct, i/c, +i/–i 500 Vpbursts of 5/50 ns 50 Ω 1 min positive yes
transient/burst 61000-4-4 2.5/5 kHz over 1 min negative
Surge IEC/EN 1 i/c 500 V
61000-4-5
1
Related and previous standards are referenced in:
2
i = input, o = output, c = case.
3
A = Normal operation, no deviation from specifications, B = Normal operation, temporary deviation from specs possible.
4
For converters with 3 output voltages, temporary deviation from specs possible.
1 +i/–i 500 V
2
mode
Technical Information: Standards
Electromagnetic Emissions
Table 9: Emissions at U
Series Standard
CISPR 11/EN 55011
CISPR 22/EN 55022
≤30 MHz ≥30 MHz
LH <A <B
1
Related and previous standards are referenced in section
nical Information: Safety.
i nom
and I
1
o nom
Tech-
but especially in battery driven mobile applications. The H
series has been successfully tested to the following specifications:
applied imped. procedure oper. form.
1/50 ns 330 Ω 10 positive and yes A
p
15 ms; burst transients per
period: 300 ms coupling mode
1.2/50 µs 12 Ω 5 pos. and 5 neg. yes A
p
p
2 Ω
.
surges per
3
4
Edition 1/04.2002 10/20
Page 11
Cassette Style AC-DC Converters H Series
Immunity to Environmental Conditions
Table 10: Mechanical stress
Test method Standard Test conditions Status
Ca Damp heat IEC/DIN IEC 60068-2-3 Temperature: 40
steady state MIL-STD-810D section 507.2 Relative humidity: 93
Duration: 21 days
Ea Shock IEC/EN/DIN EN 60068-2-27 Acceleration amplitude: 15 g
(half-sinusoidal) MIL-STD-810D section 516.3 Bump duration: 6 ms operating
Number of bumps: 18 (3 each direction)
Eb Bump IEC/EN/DIN EN 60068-2-29 Acceleration amplitude: 10 gn = 98 m/s
(half-sinusoidal) MIL-STD-810D section 516.3 Bump duration: 16 ms operating
Number of bumps: 6000 (1000 each direction)
Fc Vibration IEC/EN/DIN EN 60068-2-6 Acceleration amplitude: 0.15 mm (10...60 Hz) Unit
(sinusoidal) MIL-STD-810D section 514.3 2 gn = 20 m/s2 (60..150 Hz) operating
Frequency (1 Oct/min): 10...150 Hz
Test duration: 3.75 h (1.25 h each axis)
Table 11: Temperature specifications, values given are for an air pressure of 800...1200 hPa (800...1200 mbar)
Temperature Standard -2
Characteristics Conditions min max Unit
T
Ambient temperature
A
T
Case temperature
C
T
Storage temperature
S
1
MIL-STD-810D section 501.2 and 502.2.
2
See:
Thermal Considerations
3
Overtemperature lock-out at
4
For single output units up to 71 °C with derating.
1
3
1
.
T
C
Operational
Not operational –25 100
>95°C (PTC).
2
–10 50
4
–10 80
±2
°C Unit not
+2/-3
% operating
= 147 m/s
n
2
2
°C
Unit
Unit
Table 12: MTBF
Values at specified Module Types Ground Benign Unit
Case Temperature 40°C
1
MTBF
1
Calculated in accordance with MIL-HDBK-217E (calculation ac-
cording to edition F would show even better results).
LH 1000 384'000 h
LH 2000 306'000
LH 3000 270'000
Edition 1/04.2002 11/20
Page 12
Cassette Style AC-DC Converters H Series
(
)
Mechanical Data
09100
European
Projection
Dimensions in mm. Tolerances ±0.3 mm unless otherwise indicated.
8
2
6TE
2TE
3.27
20
5
11
14
17
±0.6
100
103
26
23
20
32
29
±0.5
12.1
Mounting holes for retaining clips V,
see Accessories
20.5
Male connector H 11 according
to DIN 41 612
1.6
M 3; depth = 4 mm
(chassis mount)
Front plate
±0.5
168.5
(11.6)
127
159.4
111.2
94.5
95
±0.8
±0.1
±0.5
88
(3 HE)
22
68
Main face
±0.5
Measurement point for
case temperatureT
173.7
Mounting plane of
connector H11
Rear
face
C
38.7
Back plate
25.40
30.48
17.25
12.17
±0.1
31.5
ø 3.5
ø 4.0
7.09
0
OK (LED green)
Inhibit i (LED red)
Potentiometer
option D or V
Fig. 16
AC-DC converter in case H02, weight 770 g (approx.)
Case aluminium, black finish and self cooling.
Edition 1/04.2002 12/20
Page 13
Cassette Style AC-DC Converters H Series
Safety and Installation Instructions
Connector Pin Allocation
The connector pin allocation table defines the electrical
potentials and the physical pin positions on the H11 connector. Pin no. 26, the protective earth pin present on all LH
(class I equipment) AC-DC converters is leading, ensuring
that it makes contact with the female connector first.
Fig. 17
32 29 262320 17 1411852
View of male H11 connector.
Table 13: H11 connector pin allocation
Electrical Determination LH 1000 LH 2000 LH 3000
Pin Ident Pin Ident Pin Ident
Inhibit control input 2 i 2 i 2 i
Safe Data or ACFAIL 5 D or V 5 D or V 5 D or V
Output voltage (positive) 8 Vo1+ 8 8 Vo3+
Output voltage (negative) 11 Vo1– 11 11 Vo3–
Control input + 14 R
Control input – 17 G
Output voltage (positive) 14 Vo2+ 14 Vo2+
Output voltage (negative) 17 Vo2– 17 Vo2–
Output voltage (positive) 20 Vo1+ 20 Vo1+ 20 Vo1+
Output voltage (negative) 23 Vo1– 23 Vo1– 23 Vo1–
Protective earthing
AC input voltage 29 N 29 N 29 N
AC input voltage 32 P 32 P 32 P
1
Leading pin (pregrounding)
1
26 26 26
10028
Installation Instructions
The H series AC-DC converters are components, intended
exclusively for inclusion within other equipment by an industrial assembly operation or by professional installers. Installation must strictly follow the national safety regulations
in compliance with the enclosure, mounting, creepage,
clearance, casualty, markings and segregation requirements of the end-use application. See also:
T echnical Infor-
mation: Installation and Application.
Connection to the system shall be made via the female connector H11 (see:
Accessories).
Other installation methods
may not meet the safety requirements.
LH AC-DC converters are provided with pin no. 26 (
which is reliably connected with their case. For safety reasons it is essential to connect this pin with the protective
earth of the supply system if required in:
accessible output circuit
.
Safety of operator
The P input (pin no. 32) is internally fused. This fuse is
designed to protect the unit in case of overcurrent and may
not be able to satisfy all customer requirements. External
fuses in the wiring to one or both input pins (no. 29 and/or
no. 32) may therfore be necessary to ensure compliance
with local requirements. See also:
Input fuse
.
Important: Whenever the inhibit function is not in use,
pin 2 (i) should be connected to pin 23 (Vo1–) to enable
the output(s).
Do not open the modules, or guarantee will be invalidated.
Make sure that there is sufficient air flow available for convection cooling. This should be verified by measuring the
case temperature when the unit is installed and operated in
the end-use application. The maximum specified case tem-
T
perature
shall not be exceeded. See also:
C max
Considerations.
If the end-product is to be UL certified, the temperature of
the main isolation transformer should be evaluated as part
of the end-product investigation.
Standards and Approvals
LH AC-DC converters correspond to class I equipment. All
),
types are UL recognized according to UL 1950, UL recognized for Canada to CAN/CSA C22.2 No. 950-95 and LGA
approved to IEC/EN 60950 standards.
The units have been evaluated for:
• Building in
• Supplementary insulation between input and case,
based on 250 V AC and 400 V DC.
• Double or reinforced insulation between input and output, based on 250 V AC and DC.
• Operational insulation between output(s) and case
• Operational insulation between the outputs
• The use in a pollution degree 2 environment
• Connecting the input to a primary or secondary circuit
with a maximum transient rating of 2500 V (overvoltage
category III based on a 1 10 V primary circuit, overvoltage
category II, based on a 230 V primary circuit).
The AC-DC converters are subject to manufacturing surveillance in accordance with the above mentioned UL,
CSA, EN and with ISO 9001 standards.
Thermal
Edition 1/04.2002 13/20
Page 14
Cassette Style AC-DC Converters H Series
Isolation
The electric strength test is performed as a factory test in
accordance with IEC/EN 60950 and UL 1950 and should
not be repeated in the field. Power-One will not honour any
guarantee/warranty claims resulting from electric strength
field tests.
Table 14: Isolation
Characteristic Input to Input to Output Output Unit
case output to case to output
Electric Required according to 1.5 3.0
strength IEC/EN 60950
test voltage
Insulation resistance at 500 V DC >300 >300 >300 >100
1
In accordance with IEC/EN 60950 only subassemblies are tested in factory with this voltage.
2
Tested at 300 V DC.
Actual factory test 1 s 2.8 5.6
AC test voltage equivalent 2.0 4.0
to actual factory test
2.1 4.2
1
1
1
1
Important: Testing by appllying AC voltages will result in
high and dangerous leakage currents flowing through
the Y-capacitors (see fig.:
0.5 – kV
0.7 – kV DC
1.4 0.3
1.0 0.2 kV
2
Block diagram)
rms
rms
MΩ
For creepage distances and clearances refer to
Technical Information: Safety.
Protection Degree
Condition: Female connector fitted to the unit.
IP20: All units fitted with option D or V with potentiometer.
IP40: All units, except those with D or V with potentiometer .
Leakage Currents in AC-DC operation
Leakage currents flow due to internal leakage capacitance
and RFI suppression Y-capacitors. The current values are
proportional to the mains voltage and nearly proportional to
the mains frequency and are specified at an input voltage of
255 V (50 Hz) where phase, neutral and protective earth
are correctly connected as required for class I equipment.
MI
1500 Ω
10061
500 Ω
10 kΩ
220 nF
22 nF
V
Cleaning agents
In order to avoid possible damage, any penetration of liquids (e.g. cleaning fluids) is to be prevented, since the
power supplies are not hermetically sealed.
Under test conditions the leakage current flows through a
measuring instrument (MI) as described in fig.:
instrument for earth leakage current tests
Measuring
, which takes into
account impedance and sensitivity of a person touching
unearthed accessible parts. The current value is calculated
by dividing the measured voltage by 500 Ω. If inputs and/or
outputs of H-units are connected in parallel, their individual
leakage currents are added.
L
L
N
N
MI for
earth
leakage
current
10053
Vo+
Vo—
Fig. 18
Measuring instrument (MI) for earth leakage current tests
according to IEC/EN 60950.
Fig. 19
Test set-up.
MI for
output
leakage
current
Table 15: Leakage currents
Characteristic LH 1000...3000 Unit
Maximum earth Permissible according to IEC/EN 60950 3.5 mA
leakage current
Maximum output Permissible according to IEC/EN 60950 0.25
leakage current
Edition 1/04.2002 14/20
Specified value at 255 V , 50 Hz 1.4
Specified value at 255 V , 50 Hz 0.005
Page 15
Cassette Style AC-DC Converters H Series
Safety of operator accessible output circuit
If the output circuit of an AC-DC converter is operator accessible, it shall be an SELV circuit according to the IEC/EN
60950 related safety standards.
The following table shows a possible installation configuration, compliance with which causes the output circuit of an
H series AC-DC converter to be an SELV circuit according
to IEC/EN 60950 up to a configured output voltage (sum of
nominal voltages if in series or +/– configuration) of 36 V .
Table 16: Safety concept leading to an SELV output circuit
Conditions AC-DC converter Installation Result
Nominal Supply Grade of insulation between Measures to achieve the resulting Safety statuts of the AC-DC
voltage input and output, provided safety statuts of the output circuit converter output circuit
Mains ≤250 V AC Double or reinforced Earthed case 1 and installation SELV circuit
1
The earth connection has to be provided by the installer according to the relevant safety standards, e.g. IEC/EN 60950
by the AC-DC converter
according to the applicable standards
However, it is the sole responsibility of the installer to assure the compliance with the relevant and applicable safety
regulations. More information is given in:
mation: Safety
.
Technical Infor-
If the H series AC-DC converters are used as DC-DC converters, please refer to the data sheet:
≤
100 W: H series.
DC-DC converters
Fuse
Fuse
Mains
~
~
Earth connection
Fig. 20
Schematic safety concept.
Use fuses and earth connection as per:
structions
output circuit
and table:
.
Safety concept leading to an SELV
AC-DC
con-
verter
Installation In-
10021
SELV
+
–
Edition 1/04.2002 15/20
Page 16
Cassette Style AC-DC Converters H Series
Description of Options
Table 17: Survey of options
Option Function of Option Characteristic
1
D
V
1
Option D excludes option V and vice versa
2
Only available with main output voltage
D Undervoltage Monitor
The input and/or output undervoltage monitoring circuit operates independently of the built-in input undervoltage lockout circuit. A logic "low" (JFET output) or "high" signal (NPN
output) is generated at pin 5 as soon as one of the monitored voltages drops below the preselected threshold level
U
. The return for this signal is Vo1– (pin 23). The D output
t
Table 18: Undervoltage monitor functions
Output type Monitoring Minimum adjustment range Typical hysteresis
JFET NPN
D1 D5 no yes – 3.5 V...48 V
D2 D6 yes no
D3 D7 yes yes
D4 D8 no yes
1
Threshold level adjustable by potentiometer (not recommended for mobile applications)
2
Fixed value between 95% and 98% of
JFET output (D1…D4):
Connector pin D is internally connected via the drain-
source path of a JFET (self-conducting type) to the negative potential of output 1.
to a monitored voltage level (
rent
JFET is protected by a 0.5 W Zener diode of 8.2 V against
external overvoltages.
Input and/or output undervoltage monitoring circuitry Safe data signal output (D1...D8)
1 2
Input and output undervoltage monitoring circuitry ACFAIL signal according to VME specifications ( V2, V3)
U
= 5.1 V
o1
recovers when the monitored voltage(s) exceed(s)
The threshold level
U
is adjustable by a potentiometer, ac-
t
cessible through a hole in the front cover.
Option D exists in various versions D1...D8 as shown in the
following table.
U
i
U
I
through the JFET should not exceed 2.5 mA. The
D
U
o1
of threshold level
U
ti
U
...
U
i min
i max
U
...
U
i min
i max
–
U
(tracking)
o1
≤ 0.4 V (logic low) corresponds
D
U
and/or
i
U
) <
U
o1
. The cur-
t
U
t
U
to
1
1
1
– 3.0...0.5 –
0.95...0.98
0.95...0.98
2
U
o1
2
U
o1
for
U
hi
– 2.3...1
3.0...0.5 "0"
–
Input
U
+
U
t
[% of
U
Uh
U
...
U
t min
t max
]
t
U
ho
"0"
11006
Vo1+
R
p
I
D
D
U
D
.
h
U
,
U
status D output,
i
o1
U
or
U
<
U
o1
t
U
>
U
+
o1
U
t
U
and
i
i
NPN output (D5...D8):
low, L,
U
≤ 0.4 V at
D
high, H,
I
h
≤ 25 µA at
D
U
D
I
= 2.5 mA
D
U
D
= 5.25 V
Vo1–
Fig. 21
Options D1...D4, JFET output
11007
Vo1+
Connector pin D is internally connected via the collectoremitter path of a NPN transistor to the negative potential of
U
output 1.
voltage level (
through the open collector should not exceed 20 mA. The
≤ 0.4 V (logic low) corresponds to a monitored
D
U
and/or
i
U
) >
U
+
U
o1
t
h
. The current
I
D
Input
D
NPN output is not protected against external overvoltages.
U
should not exceed 40 V .
D
U
,
U
status D output,
i
o1
U
or
U
<
U
and
i
i
U
o1
t
U
>
U
+
U
o1
t
high, H,
I
≤ 25 µA at
D
low, L,
U
h
≤ 0.4 V at
D
Edition 1/04.2002 16/20
U
D
U
I
= 20 mA
D
= 40 V
D
Vo1–
Fig. 22
Options D5...D8, NPN output
R
p
I
D
U
D
Page 17
Cassette Style AC-DC Converters H Series
t
t
t
t
Threshold tolerances and hysteresis:
If
U
is monitored, the internal input voltage after the input
i
filter and rectifier is measured. Consequently this voltage
differs from the voltage at the connector pins by the voltage
drop D
U
across the input filter. The value of D
ti
upon the input voltage range, threshold level
U
depends
ti
U
, tempera-
t
ture and input current. The input current is a function of the
input voltage and the output power.
Input voltage monitoring
NPN
U
D
U
D high
33 33
1
t
h
t
low min
4
JFET
U
U
U
U
o1 nom
D low
I
D high
I
D low
D high
D low
U
0.95
0
I
D
0
U
D
0
o1
1
U
D
U
D high
U
D low
Fig. 23
Definition of U
, D
ti
t
low min
D
U
U
ti
4
ti
= 0
o
P
and U
U
o nom
P
=
o
P
U
ti
(JFET output)
hi
t
low min
o nom
P
=
o
P
11021
11008
U
i
hi
= 0
o
P
t
4
t
high min
1
t
h
0
U
[V DC]
i
U
+
U
ti
hi
U
ti
0
Input voltage failure Switch-on cycle
Output voltage monitoring
U
NPN
D
U
D high
U
D low
0
I
D
I
D high
I
D low
0
U
JFET
D
U
D high
U
D low
0
U
o1
U
o1 nom
U
+
U
to
ho
U
to
0
Fig. 24
Relationship between U
2
3
3
Output voltage failure
, Uo1, UD, ID and Uo1/U
i
t
low min
o nom
4
versus time.
Input voltage sag
Switch-on cycle and subsequent
input voltage failure
t
t
t
1
With output voltage monitoring the hold-up time
2
The D signal remains high if the D output is connected to
an external source.
3
t
= 40...200 ms, typically 80 ms
low min
t
t
= 0
h
Edition 1/04.2002 17/20
Page 18
Cassette Style AC-DC Converters H Series
V ACFAIL Signal (VME)
Available for units with
U
o1
= 5.1 V.
This option defines an undervoltage monitoring circuit
for the input or the input and main output voltage equivalent
to option D and generates the ACFAIL signal (V signal)
which conforms to the VME standard. The low state level of
the ACF AIL signal is specified at a sink current of
to
U
≤ 0.6 V (open-collector output of a NPN transistor).
V
I
= 48 mA
V
The pull-up resistor feeding the open-collector output
should be placed on the VME backplane.
After the ACFAIL signal has gone low, the VME standard
t
requires a hold-up time
of at least 4 ms before the 5.1 V
h
output drops to 4.875 V when the 5.1 V output is fully
loaded. This hold-up time
t
is provided by the internal input
h
capacitance. Consequently the working input voltage and
the threshold level
mum input voltage
U
should be adequately above the mini-
ti
U
of the converter so that enough
i min
energy is remaining in the input capacitance.
Table 19 Available internal input capacitance and factory
potentiometer setting of U
Types LH Unit
C
i min
U
ti
t
h
with resulting hold-up time.
ti
0.14 mF
85 V AC
5ms
Formula for threshold level for desired value of
P
• (
t
U
ti
2 •
= ––––––––––––––––––––– +
+ 0.3 ms) • 100
o
h
C
• η
i min
t
:
h
2
U
i min
where as:
C
= minimum internal input capacitance [mF], accord-
i min
ing to table below
P
= output power [W]
o
h
= efficiency [%]
t
= hold-up time [ms]
h
U
= minimum input voltage [V]
i min
U
= threshold level [V]
ti
Remarks:
U
The threshold level
ing manufacture to a value according to table:
tage monitor functions
of option V2 and V3 is adjusted dur-
ti
Undervol-
, section
Option D
).
A decoupling diode should be connected in series with the
input to avoid the input capacitance discharging through
other loads connected to the same source voltage.
Option V operates independently of the built-in input undervoltage lock-out circuit. A logic "low" signal is generated at
pin 5 as soon as one of the monitored voltages drops below
U
the preselected threshold level
. The return for this signal
t
voltage(s) exceed(s)
justable by a potentiometer accessible through a hole in the
front cover.
Versions V2 and V3 are available as shown below.
U
+
U
t
is Vo1– (pin 23). The V output recovers when the monitored
Table 20: Undervoltage monitor functions
V output Monitoring Minimum adjustment range Typical hysteresis
(VME compatible)
V2 yes no
V3 yes yes
1
Threshold level adjustable by potentiometer (not recommended for mobile applications)
2
Fixed value between 95% and 98% of
U
i
U
o1
U
(tracking), output undervoltage monitoring is not a requirement of VME standard
o1
of threshold level
U
ti
U
...
U
i min
i max
U
...
U
i min
i max
U
t
U
to
1
1
– 3.0...0.5 –
0.95...0.98
2
U
o1
U
3.0...0.5 "0"
V output (V2, V3):
Connector pin V is internally connected to the open collec-
tor of a NPN transistor. The emitter is connected to the
U
negative potential of output 1.
sponds to a monitored voltage level (
The current
I
through the open collector should not exceed
V
≤ 0.6 V (logic low) corre-
V
U
and/or
i
U
) <
o1
U
.
t
Input
50 mA. The NPN output is not protected against external
overvoltages.
U
and
i
U
should not exceed 60 V .
V
U
,
U
status V output,
i
o1
U
or
U
<
i
U
o1
t
U
>
U
+
U
o1
t
low, L,
U
≤ 0.6 V at
V
high, H,
I
h
≤ 25 µA at
V
U
V
I
V
U
= 50 mA
= 5.1 V
V
Fig. 25
Output configuration of options V2 and V3
. The threshold level
h
[% of
U
t min
11009
...
Vo1+
V
Vo1–
U
Uh
t max
I
V
U
V
for
hi
U
is ad-
t
U
]
t
U
ho
R
p
Edition 1/04.2002 18/20
Page 19
Cassette Style AC-DC Converters H Series
Threshold tolerances and hysteresis:
If
U
is monitored, the internal input voltage is measured af-
i
ter the input filter and rectifier. Consequently this voltage
differs from the voltage at the connector pins by the voltage
drop ∆
U
across input filter and rectifier. The value of ∆
ti
depends upon the input voltage range, threshold level
U
U
temperature and input current. The input current is a function of input voltage and output power.
Input voltage monitoring
V2
U
V
U
V high
U
V low
0
V3
U
V
U
V high
U
V low
0
1
t
U
5.1 V
4.875 V
2.0 V
o1
0
h
3
3
3
3
t
low min
t
low min
2
4
2
U
V high
ti
,
t
U
Fig. 26
Definition of U
V low
U
V
t
D
U
, ∆Uti and U
ti
2
low min
o nom
P
=
o
P
U
hi
= 0
o
P
ti
= 0
o
P
U
hi
2
t
low min
3
4
o nom
P
=
o
P
11023
11010
U
i
t
2
t
low min
3
t
1
t
h
t
U
[V DC]
i
U
+
U
ti
hi
U
ti
0
Input voltage failure Switch-on cycle
Output voltage monitoring
U
V2
V
U
V high
U
V low
4
4
0
t
V3
U
V high
U
V low
U
5.1 V
4.875 V
2.0 V
U
+
ti
U
V
4
3
0
o1
0
U
i
U
hi
U
ti
low min
3
0
Fig. 27
Output voltage failure
Relationship between Ui, Uo1, UV, IV and Uo1/U
2
versus time.
o nom
Input voltage sag
Switch-on cycle and subsequent
input voltage failure
t
t
t
1
VME request: minimum 4 ms
2
t
= 40...200 ms, typically 80 ms
low min
3
U
level not defined at
V
4
The V signal drops simultaneously with the output voltage, if the
pull-up resistor
t
high if
R
is connected to an external source.
P
U
< 2.0 V
o1
R
is connected to Vo1+. The V signal remains
P
t
Edition 1/04.2002 19/20
Page 20
Cassette Style AC-DC Converters H Series
Accessories
A variety of electrical and mechanical accessories are
available including:
– Front panels for 19" rack mounting, Schroff and Intermas
systems.
– Mating H11 connectors with screw, solder, fast-on or
press-fit terminals.
– Connector retention facilities.
– Code key system for connector coding.
– Flexible H11 PCB for mounting of the unit onto a PCB.
– Chassis mounting plates for mounting the 19" cassette to
a chassis/wall where only frontal access is given.
– Universal mounting bracket for DIN-rail or chassis moun-
ting.
For more detailed information please refer to:
Products
.
Accessory
Front panels
H11 female connector,
Code key system
Mounting plate,
Connector retention clips
Flexible H11 PCB
Universal mounting bracket for DIN-rail mounting.
Edition 1/04.2002 20/20
Loading...