www.HarvardTechnology.com
CLS80 Application
Manual
Version 1.1
06 Mar 2014
Harvard Technology
CLS80 Application Manual V1.1
Table of Contents
Page
Introduction
Product Specification
Connection Diagram
Dimensions and Fixing Centres
Output Current Settings
Dali, Touch Dim and Switch Dim Settings
Dali
Touch Dim
Switch Dim
Performance
Breaker Information
Input Overvoltage Withstand
Thermal Protection
LED Module Construction
Wire Length
Reliability
Lifetime
Contact Us
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Harvard Technology
CLS80 Application Manual V1.1
Introduction
The CLS80 range of LED drivers provide a compact, low-profile and efficient solution for modern LED luminaires
replacing traditional fluorescent form-factors.
The CLS80 is available as fixed output, DALI dimming, touch dimming and wireless “EyeNut” controlled versions.
Product Specification
Model
Switched Current Selection
Analogue Dimming Control (1-10V)
DALI Dimming Control
Touch Dimming
Switch Dimming
Input Voltage (Nominals)
Input Voltage (Maximum Range)
Input Current (maximum)
Input Power
Leakage Current
Power Factor (typical, full load)
Input Frequency
DC Operation
Inrush Current
Surge Protection
Output Current (Switchable)
Output Current Accuracy
100/120Hz Output Ripple
Output Voltage Range
Open Circuit Voltage
Output Voltage to Earth
Dimming
Thermal Protection
Terminals
Wire size
Ingress Protection (IP) Classification
Standards Compliance
CLS80-350S2-UNI-B
•
CLS80-350S2D-UNI-B
•
•
•
•
120 - 277 Vac
(i.e. 120, 220, 230, 240, 277 Vac systems)
108 – 305 Vac
0.99 (120 Vac) – 0.97 (277 Vac)
47-63 Hz
Consult Harvard
Typ 50A / <500us
2KV Differential, 4KV Common mode
350 / 300 / 250 / 200 mA
±5%
<2%
100 – 240 Vdc
250 Vdc Max
420Vrms
Not Supported
DALI control, 1-100%
Gradual reduction of output current above Tc=80C
Push-wire for stranded or solid wire
0.5 – 1.5mm²
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EN61347-2-13 EN61000-3-2 EN61000-3-3 EN61547 EN55015 EN62384
Connection diagram
NOTE:1) The LED output is NOT isolated from mains supply, and LED connections MUST be treated in the same way as
mains wiring. Provision must be made to prevent accidental contact by service personnel (i.e. touch-proof
connectors etc).
2) Output Voltage between output terminals is up to 250V DC, but the potential of the LED+ terminal may be as
high as 420V RMS with respect to earth.
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CLS80 Application Manual V1.1
Dimensions and Fixing Centres
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CLS80 Application Manual V1.1
Output Current Setting
Output current can be set via the DIP switches adjacent to the output terminal block.
The mains supply MUST be switched off before operating switches for your own safety. Use a suitable small, insulated
tool.
350mA
Current
Voltage
(mA)
350
240
300
240
250
240
200
240
DIP Switch
1
2
Off
Off
Off
On
On
Off
On
On
For Switchable CLS80-350S2, the output current is fixed at the levels in the table.
For DALI CLS80-350S2D, the switches set the maximum current as per above table, the dimming is then pro-rata to the
maximum current, i.e, if a driver is set to 200mA, then 10% dim level will be 20mA.
DALI, Touch Dim & Switch Dim Functions
CLS80-350S2D drivers have a 4 pole DIL switch adjacent to the output terminals. Switches 1 and 2 set the output
maximum level as above.
Switches 3 and 4 invoke DALI, Touch Dim or Switch Dim as per the following table. Note that the switch should be
operated with care using a small, insulated pointed tool. The mains supply MUST be switched off before operating
switches for your own safety. Also the mode switches are only read by the unit at power-on, so the unit must be
powered down for at least 10 seconds for changes to take effect.
Mode
DIP Switch
3
4
Off
Off
Off
On
On
Off
On
On
DALI
Touch Dim
Switch Dim 25%
Switch Dim 10%
DALI
The CLS80 is compliant to DALI (Digitally Addressable Lighting Interface) standard EN62386, acting as Device Type 6
(LED Module).
The DALI control bus should be connected to the “DA” terminals on the driver.
Touch Dim
Touch Dim provides a simple dimming facility that can control multiple units in parallel, giving on/off and dimming
control by means of a single switch. The mains supply voltage is permanently connected to the driver, while the
control inputs (DA/LS, DA/N) are connected to mains via a momentary (i.e. non-latching push-to-make switch or
similar). A short push of the switch will toggle the light on or off. If the switch is held on, the light will dim up or down,
alternating direction with each push of the switch.
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Touch Dim Operation
Ignore
Short push
Long push
Reset push
CLS80 Application Manual V1.1
Contact Duration
0 to 40ms
40 to 400ms
400 to 10,000ms
>10,000ms
Driver Response
Ignore
Toggle on/off
Dim up or down
Driver Reset
If the mains supply is interrupted, the driver will restore the previous condition (light on/off status, dim level and dim
direction) when the mains supply returns. If a lighting system is extended, modified or otherwise disturbed, it is
possible drivers may no longer be synchronised for light state, dim level or direction. To solve this problem, all drivers
on a system can be reset to the same state by pressing the control switch for longer than 10 seconds. At 10 seconds,
all drivers will jump to 50% output and next dim direction downwards.
Switch Dim
Switch dim is useful for areas of low or occasional occupancy, i.e. corridors and such like. Usually, a switched mains
signal is taken from a PIR occupancy sensor to the control inputs (DA/LS, DA/N) of the driver. With no signal present,
the driver will output 10% or 25% current according to the switch settings. When triggered by the sensor, the driver
will quickly fade up the lights to 100%, and remain at 100% while the control input is activated. When the control
signal terminates, the lights will slowly fade back to 10% or 25% as appropriate.
Typical Performance
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CLS80 Application Manual V1.1
Breaker Information
The maximum number of drivers that can be powered from a single breaker is based on a minimum mains voltage of
198Vrms
Unit
CLS80
10A breaker
type C or D
19
16A breaker
type C or D
31
20A breaker
type C or D
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Input Overvoltage Withstand
The maximum input voltage the unit is guaranteed to meet specification is 305Vrms. Above this voltage the limitation
is the Voltage Dependent Resistor (VDR) across the live and neutral inputs, this has a rated voltage of 320Vrms and
starts to conduct significant currents above 350Vrms, testing has shown they will fail destructively at around 370 390Vrms causing the input fuse to fail.
The VDR is fitted to attenuate lightning induced surges i.e. the electromagnetic field from lightning discharge induces
a very short high voltage low impedance pulse on the mains supply.
Thermal Protection
The CLS80 incorporates an internal temperature sensor the will gradually reduce the output current, thus reducing the
dissipation in the driver and especially in the associated LEDs’ and luminaire housing.
When used as intended as an integral (built in) driver to a luminaire, the thermal control will help protect both the
driver and the LED’s from excessive temperature conditions.
LED Module Construction
As the output of the driver is a HAZARDOUS voltage, and is not isolated from mains, care should be taken in the design
of LED Module (“Light Engine”) to ensure safety compliance. Adequate creepage and clearance distance for 420Vac
rms to earth potential must be provided. Particular attention should be given to the edges, cut-outs and holes within
metal core PCB designs to ensure creepage distances are maintained.
The dielectric layer of the LED Module metal core PCB shall be adequate.
Any suppression capacitors fitted on the LED module from LED circuit to earth will need to be safety approved “Y2”
class capacitors. Such capacitors will contribute to earth leakage (touch) currents and should be kept to a minimum.
As the CLS80 does not provide isolation from the mains supply, any mains bourn surges or transients, particularly
common-mode (i.e. to L/N to earth), are likely to be imposed upon the LED Module.
Wire Length
It is not recommended to exceed 2m of wire length between the CLS80 driver and associated LED modules. Wiring
shall have adequate insulation for the voltages present, i.e. generally 600V grade wire is necessary.
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CLS80 Application Manual V1.1
Reliability
MTBF (Mean Time Between Failures).
The MTBF calculated using MIL-HDBK 217F is around [TBA] hours with the driver with a case temperature (tc) of 70°C.
Experience has shown that predictions using this method tend to be pessimistic with the real MTBF substantially
longer. MTBF figures are very dependent on actual service conditions especially temperature and humidity and are
almost impossible to predict with any accuracy.
Lifetime
Whilst the MTBF calculation deals with the random failures in a field population the lifetime looks at component wear
out. In the CLS drivers the main components of interest are the electrolytic capacitors where the dielectric liquid
within the capacitors migrates slowly over time as its molecules permeate through the seals around the leads. As a
rule of thumb the rate of evaporation doubles with every 10K rise in temperature.
The high quality capacitors used within the CLS range have a minimum life of 8,000 hours at 105°C. Capacitor
manufactures deem end of life when their capacitance has fallen by 20 or 30% (depending on manufacturer) from
their initial value. With a case temperature (tc) of 70°C the capacitors will be running at around 75°C so their life
would be 8,000 X 23 = 64,000 hours thus a useful life of >100,000 hours can be expected from the CLS driver. At a tc of
80°C this figure will be halved i.e. 32,000 hours.
Contact Us
Email:
Address:
Website:
Telephone:
techsupport@harvardtechnology.com
Harvard Technology PLC, Tyler Close, Normanton, West Yorkshire, WF61RL , United
Kingdom.
www.HarvardTechnology.com
+44 (0)113 383 1053
E&OE
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