LAMBDA LZS-A1500-3-001 POWER SUPPLY

LZS-A1500-3-001 POWER SUPPLY

1 Safety and Recommended Practices

1.1  General Safety Instructions

This power supply is a switch mode power

supply for use in applications meeting a

Pollution Degree 2 environment.  A suitable

mechanical and fire enclosure must be

provided by the end use equipment for

shock hazard protection, fire protection

and protection from hazardous energy lev

els.

READ SAFETY INSTRUCTIONS carefully

before working on the unit.

HIGH VOLTAGE WARNING: Dangerous

voltages are present within the power

supply.

NO USER SERVICEABLE PARTS

INSIDE.

1.  Do not install, test or operate this product

near water, and do not spill any liquid on it.

2.  Do not operate this product unless it is

in a secure position.

3.  This product must be installed and put

into service by authorized competent

personnel only who are fully conversant

with the hazards of AC line operated

equipment and with the particular dangers

associated with switch mode power

supplies.

4.  This product is designed for use within

other equipment or enclosures which

restrict access to authorized competent per

sonnel only and must not be user accessi

ble.

5.  This product must be reliably earthed

and professionally installed in accordance

with the prevailing electrical wiring regula

tions and safety standards.  The product's

PE connection is via the tapped standoff

and screw on the front panel marked with

IEC 60417-1 Symbol 5019.

6.  The case is connected to the product's

PE connection with screws.  Therefore,

screws at the case must not be removed or

loosened.

7.  The output power taken from the power

supply must not exceed the rating stated

on the power supply label.

1-800-LAMBDA-4

8.  Openings in the product case are

designed for ventilation and must not be

obstructed when the product is installed and/

or operated.

9.  Never push objects of any kind into the

product through openings in its case as

this could result in electric shock or fire

hazard.

10.  Use copper stranded wire only, 12 to 14

AWG rated at 105°C for the AC input.  All

strands must be secured in the terminal

block to avoid potential danger of short

circuit.

11.  Properly torque AC input terminals to 9 in-lb.

12.  An internal fuse protects the unit and

must not be replaced by the user.  In case

of internal defect, the unit must be

returned to the manufacturer.

13.  The output of this power supply is haz

ardous and must not be user accessible in

the end use equipment.  The (+) or (-) output

can be earthed.  Use wire rated at 105°C

and sized for 150% of the rated load.

14.  The unit contains components that

require special disposal.  Make sure that

the unit is properly disposed of at the end

of its service life.

1.2 Safety Agency Approvals

Regulatory agency compliance applies

only for operating frequencies between

47-63Hz.

No safety agency approvals for 100-380VDC

operation.

This product is approved to UL/CSA

62368-1. 3rd Ed, IEC/EN 62368-1:2014.

UL 508 Edition 18.

The CE Marking, when applied to a product

or packing material for a product covered

by this handbook, indicates compliance with

the EMC Directive, Low Voltage Directive

and RoHS Directive.

The UKCA Marking, when applied to

a product or packing material for a

product covered by this handbook,

indicates compliance with the Electrical

Equipment (Safety) Regulations and

Restriction of the Use of Certain

Hazardous Substances in Electrical &

Electronic Equipment Regulations.

Emissions

Table  1

AC Line Conducted Emissions EN55022/EN55011 (0.15-30 MHz) Class B

Radiated RF Emissions EN55022/EN55011 30-1000 MHz Class B

Powerline Harmonics EN61000-3-2 Class A Limits

Powerline Fluctuation/Flicker EN61000-3-3 Complies

Immunity

Electrostatic Discharge IEC61000-4-2 +/-8 kV Air

+/-6 kV Contact

RF Radiated Fields IEC61000-4-3 10 V/m, 80 MHz-2.5GHz

80% AM @ 1kHZ

Electrical Fast Transients IEC61000-4-4 +/-2 kV AC Line, Criteria A

+/-1 kV I/O Line > 3m, Criteria A

Lightning Surge IEC61000-4-5 +/-2 kV line to GND (CM), Criteria A

+/-1 kV line to line (DM), Criteria A

Conducted RF Common Mode IEC61000-4-6 10 V/m RMS, 150 kHz-80 MHz

80% AM at 1kHz

Power Frequency Magnetic Field IEC61000-4-8 3 A/m

Voltage Dips/Short Variations IEC61000-4-11 5% of nom. line for .5 cycles - Criteria A

40% for 5 cycles - Criteria A

70% for 25 cycles - Criteria A

95% Dip for 5 seconds

Unit should not latch

SEMI-F47  50% of nom. line for 200 msec

(110 VAC@1000W, 70% for 500 msec

220 VAC@1500W) 80% for 10 seconds

90% for 15 seconds

0% for 1 cycle or 20mS

Additional Immunity

Ring Wave Lightning Surge Test IEEE C62.41 6 kV/30 Ohm Criteria A

Maximum Ratings

Units LZS-A1500-3

Output Voltage Range V 18-29.4

Output Current (Power) @ 60°C** A(W) 63 (1512)

DC Output @ 24V

Output Current (Power) @ 70°C** A(W) 37.8 (907)

Operating Temperature °C 100% rated load from -30°C to 60°C derate linearly to

60% @ 70°C (4%/°C)

Start-up Temperature °C -40° to +70°

Input Specifications

Units LZS-A1500-3

Input Voltage Range*** VAC Input Voltage Range*** VAC 85-265 (47-440Hz) Single phase;

VDC 100-380

Input Current (RMS, maximum) A 18 RMS

Inrush Current (Peak, at cold start) A 30A/110VAC;  40A/220VAC

Power Factor Harmonics - EN61000-3-2 Compliant

Power Factor (at max output power) - 0.98 typical @ 170VAC

Input Power (maximum) W 1800W @ 63A (1512W) and 170VAC line

Input Surge Protection - 1kV Differential Mode;  2kV common mode

Input EMI Conducted Emissions - FCC Class B, CISPR 22 Class B

Efficiency (at max. output power) % 84 typical @ 110VAC line

LZS-A1500-3 Output De-rating

85 VAC 18 63 1134 62.50 1125 37.50 675

(120 VDC) 24 50 1200 46.90 1125 28.20 675

29.4 40.8 1200 38.30 1125 23.00 675

90 VAC 18 63 1134 63.00 1134 40.00 720

(127 VDC) 24 54.2 1300 50.00 1200 30.00 720

29.4 44.2 1300 40.80 1200 24.50 720

95 VAC 18 63 1134 63.00 1134 42.50 765

(134 VDC) 24 58.4 1400 53.10 1275 31.90 765

29.4 47.6 1400 43.40 1275 26.10 765

100 VAC 18 63 1134 63.00 1134 45.00 810

(142 VDC) 24 63 1512 56.30 1350 33.80 810

29.4 51.4 1512 46.00 1350 27.60 810

105 VAC 18 63 1134 63.00 1134 47.50 855

(148 VDC) 24 63 1512 59.40 1425 35.70 855

29.4 51.4 1512 48.50 1425 29.10 855

110-265 VAC 18 63.00 1134 50.30 907

(155-380 VDC) 24 63.00 1512 37.80 907

29.4 51.40 1512 37.80 907

Output Performance Specifications

Units LZS-A1500-3

Voltage Line Regulation % 0.1

Voltage Load Regulation % 0.1

Ripple and Noise @ 20 MHz measurement

Bandwidth. EIAJ RC-9002A procedure. (PARD-mVP-P) 75

Temperature Coefficient %/°C .01

Startup Time (at 110 VAC input) Sec. Less than 1 second

Overshoot mV No overshoot at turn on or turn off

Holdup Time (Full Power/220VAC) mS 10

Ride through (Full Power/220VAC) mS 20

Voltage Sag Immunity (Full Power/110VAC) - Semi-F47 compliant

Load Transient Response +/-1% of Vo ; 1A/S; Recovers to within

(25% step load change)  - +/-0.2% in < 1.25 mS

Operating Modes

Table  6

Series Operation Yes (see Fig. 7)

Parallel Operation Two or more identical units (see Fig. 6).  (Use of D. con. terminal 5 will

(with current sharing) provide current sharing to within 10% nominal of rated 60°C current.)

DC Output Controls and Indicators

Output Voltage Adjust Screwdriver adjustment over entire range. Output voltage range is from

18-29.4V. (Multi-turn potentiometer accessible from terminal end of chassis.)

Overvoltage Protection Adjust Screwdriver adjustment over entire range. Overvoltage trip range is from

20-34V. Factory setpoint is 31.0V. (Multi-turn potentiometer accessible

from terminal end of chassis.)

Output Good Indicator Green colored LED illuminates when output is within specified operating range

Fault Indicator Red colored LED illuminates if overvoltage, overtemperature, or overcurrent

shutdown occurs. The LED is also illuminated if the output is less than approximately

95% of its adjusted output or if the output is inhibited (stand-by mode).

Remote Control Features

Remote Voltage Sensing Provides precise regulation directly at load (see Fig. 3).  Maximum total

DC voltage drop between output terminals and load must be limited to

<1.0 V.  In addition, the voltage at the output terminals must be limited to

29.4V.

Remote Voltage Programming 1000 ohms per volt for resistor connected between pins 1 and 2

external resistor. on TB201 (see Figs. 4 and 5).

Remote Voltage Programming Volt per volt for voltage source connected between pins 1 and 2

external voltage source. on TB201 (see Figs. 4 and 5).

Remote On/Off Control Enable/Disable output via TTL compatible signal connected between

pins 6 and 7 of “D” connector (see Fig. 9).

Signals Isolation Pins 6 and 7 are fully isolated from all other power supply terminals.

Signal Logic Logic zero (below 0.7 V), short circuit or open circuit disables power

supply output.  Logic one (above 2.5 V) enables power supply output.

Signal Current Draw Current draw from Logic 1 input is less than 4mA.

Output Response Time Output will be within specified limits within 100 ms. of application of

logic “1” signal.

Signal Enable Remote on/off function must be enabled by moving “OUTPUT ENABLE”

switch at terminal end of chassis from “LOCAL” to “REMOTE” position (see Fig. 9).

Auxiliary Monitoring and Alarm Signals

Optically coupled, conductance outputs.  (Conduct up to 1mA at a voltage of <0.4 V, when active.)

Input Power Good Signal Conductance signal which indicates adequate input capacitor voltage to

provide 10 ms holdup time when operating at full output power.

Signal will be asserted when the unit is remotely disabled (AC still present)

or when unit shuts down due to overtemperature (see Fig. 10).

Output Good Alarm Signal Conductance signal which indicates that delivered output voltage, as measured at

the +V and -V terminals, is above its minimum specified value (see Fig. 10).

Inverter Good Signal Conductance signal which indicates that the power supply’s inverter is

functional.  At very light loads, this signal may be indeterminate (see Fig. 10).

Signal Isolation Input power good, output UV/OV alarms, inverter good and remote on/off

signals are isolated from power supply output and each other for voltages up

to 500 volts, minimum.  3000 VAC isolation from AC input to all auxiliary signals.

Synchronization (Sync) Auxiliary signal at approximately 200khz (switching frequency of unit) used for

synchronizing with other equipment

Protection Features

Table   10

Output Voltage Range V 18-29.4V

Nominal Factory Set Point V 24V

Overvoltage Protection (adjustable) V 20-34V (Factory set to 31.0V)

Overcurrent Protection -  Factory set to 110% min. and 130% max.

Thermal Protection - Self-resetting thermostat.*

Fusing - Internal

Isolation Voltages - 4242 VDC, Input to Output

2121 VDC, Input to Chassis Ground

500 VDC, Output to Chassis Ground

Regulatory Agency Compliance - UL 62368-1. CSA C22.2 No. 62368-1

UL508. CSA C22.2 No. 107.1

EN62368-1

IEC62368-1

IEC61000 2nd Edition, Semi F47

Leakage current (AC line to  μA  Less than 1.5 mA @ 265 VAC, 60 Hz

chassis ground)

Mechanical Features

Units

Table  11

Storage Temperature (non-operating) °C -40°C - +85°C

Weight  lbs 9.2 lb net

Size inches 5.62” x 4.75” x 10.5”

Finish - Textured gray - painted

Mounting - One mounting surface (mounting position not restricted)

Maximum allowable penetration into power supply is

1/4”.  Requires No. M4 (metric) hardware - supplied

with unit.)

Input and Output Connections

Table  12

Input Heavy duty terminal block

Chassis Ground Tapped hole and screw provided in chassis.

DC Output Heavy-duty bus bars with 1/4” clearance holes for load connections.

(Connection hardware supplied with unit.)

Local/Remote voltage sensing, Four-position lugless connector (TB201), see Fig. 1.

Remote on/off, Parallel operation. (Accepts up to #14 AWG size stripped wire).

Auxiliary Control and Alarm Signals Connections for remote and local sens

. GUIDE TO APPLICATION

4.1 SAFETY NOTICE

Dangerous voltages exist in this equipment. Observe the usual safety precautions when operat

ing, wiring, or servicing to reduce the risk of shock or injury.

4.2 INPUT VOLTAGE

See Table 3 on page 4.

4.3 OUTPUT VOLTAGE

This power supply operates as a constant-voltage source with maximum load ratings as listed

on page 3.  If the load current tries to exceed 110% of the 60°C rating, the output voltage will

begin to decrease, thereby limiting the power delivered to the load.  Upon removal of overload,

normal operation will resume.

When shipped from the factory, the power supply is ready for use with output voltage (Vout) set

to its nominal rating of 24.0V.  Jumpers are in place on TB201 for local voltage sensing.  Where

precise regulation is required directly at the load, remote voltage sensing can be utilized.  This

can be achieved by utilizing the remote sense terminals on TB201 or "D" connector (see Figs.2

and 3).  The output voltage can be increased by turning the Vout adjust potentiometer clock

wise.  The output voltage is decreased by turning the Vout adjust potentiometer counter clock

wise.

As shown on page 4. LZS-A1500 power supplies have both a maximum current rating and a

maximum output power rating (as a function of ambient temperature and input voltage). Care

should be taken to limit both output current and output power to be within specified limits.  If

these limitations are not adhered to, the internal thermal protection circuit may shut down the

power supply's operation.  For remote voltage sensing, the maximum limits for output power, as

given on page 4. apply at the power supply output terminals, not at the remote sensing point.

When adjusting the output voltage above 24.0V, ensure that there is sufficient OVP margin with

respect to the output voltage, to avoid nuisance tripping.

4.4 OVERVOLTAGE PROTECTION CIRCUIT ADJUSTMENT

The overvoltage protection circuit provides an adjustable means of disabling the DC output if it

should exceed a pre-determined safe value.  When shipped from the factory, the overvoltage

level on each LZS unit is set as given in table 7 on page 5.  If a different OVP threshold is

required, it can be adjusted using the following method:

1. Turn the OVP Adjust potentiometer fully clockwise (at least 10 turns).

2. With the power supply unloaded, set Vout to the OVP threshold desired.  In cases where the

desired OVP threshold exceeds the unit’s adjustment range maximum of 29.4V, a programming

resistor (see figures 4 & 5) will temporarily be needed to provide the higher output voltage to

perform the adjustment. Once adjusted, remove the programming resistor. Alternatively, you

may use an external voltage source to set the OVP threshold as shown in figures 4 & 5.

3. Slowly turn the OVP adjust control counter clockwise while monitoring the output voltage.

Stop turning the control immediately when the red FAULT indicator lights, indicating an OVP

shutdown.  At that point, the OVP threshold is set to the desired value.

4.5 OVERTEMPERATURE AND OVERVOLTAGE SHUTDOWN

LZS-A1500 power supplies will automatically shut down if operating conditions cause excessive

internal heating or excessive output voltage.  After the occurrence of an overvoltage shut down,

input power must be interrupted or the remote on/off feature must be toggled to re-establish the

output.  Overtemp shutdown resets itself once the unit has cooled off by approximately 10°C.

4.6 AUXILIARY CONTROL AND ALARM SIGNALS

LZSa power supplies provide auxiliary control and alarm signals per page 5.  These signals are

accessible via the 15-pin, sub miniature "D" connector, located below the output terminals of the

unit