TDK-Lambda Americas
3055 Del Sol Blvd. San Diego, CA. 92154
TEL. 619.575.4400 FAX 619.429.1011
Toll Free-1.800.LAMBDA4
http://www.us.tdk-lambda.com/lp
CSS500 SERIES USER MANUAL
August 9, 2011
General Safety Instructions
This is an open type switch mode po wer supply for use in applications meeting Pollution De gree 2 environment.
A suitable mechanical and fire enclosure must be provided by the end use equi pment for shock hazard
protection, fire protection and protection from hazardous energy levels.
READ SAFETY INSTRUCTIONS carefully before working on the unit.
HIGH VOLTAGE WARNING: Dangerou s voltages are present in the po wer supply.
1. Do not install, test or operate this unit near water and do not spill any liquid on it.
2. Do not operate this unit unless it is in a secu re position.
This unit 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 dange rs associated with switch mode
power supplies.
The output power taken from the power supply must not exceed the rating stated on the power supply label.
Refer to typical rating on power supply label for product’s real output.
In case of defect, this unit must be returned to the manufacturer.
Safety Agency Certifications
CSS500-xx, /S, /T versions
These units are approved to UL 60601-1 1st Edition, CSA 601.1-M90, IEC 60601-1:1988+A1+A2 and EN
60601-1:1990+A1+A2. EMC should be evaluated to IEC/EN 60601-1-2 in the final system.
CSS500-xx/I, /SI, /TI versions
These units are approved to UL 60950-1 2nd Edition, CSA 60950-1-07 and EN 60950-1:2006+A11.
Environmental Specifications
Storage and Transportatio n: -10°C to 85°C, 10% to 95%RH
Operating: 70°C max ambient, IPX0, Continuous, Class I, NOT evaluated as AP/APG equipm ent.
Input Rating
100-240 VAC, 6-2.5 A, 50/60 Hz
Output Rating
Model Output
Voltage Maximum
Current
Convection
Maximum
Power
Convection
Maximum
Current
Forced Air
Maximum
Power
Forced Air
CSS500-12 12V 30A 360W 41.67A 500W
CSS500-24 24V 15A 360W 20.84A 500W
CSS500-30 30V 12A 360W 16.67A 500W
CSS500-36 36V 10A 360W 13.89A 500W
CSS500-48 48V 7.5A 360W 10.42A 500W
CSS500-54 54V 6.67A 360W 9.26A 500W
CSS500-57 57V 6.32A 360W 8.78A 500W
Connections
CN1 See outline drawings
CN2 Mates with J.S.T. housing XHP-2, terminals: SXH-001T-P0.6; 28-22 AWG
Pin 1 5Vsb
Pin 2 Common 0V (V-)
CN3 Mates with J.S.T. housing XHP-6, terminals SXH-001T-P0.6; 28-22 AWG
Pin 1 Current Share
Pin 2 Remote On/Off
Pin 3 Common 0V (V-)
Pin 4 +5Vsb
Pin 3 - Sense
Pin 6 + Sense
CN4 See outline drawings
CN5 Mates with Molex housing 90142-0006 & terminals: 90119-0109. (The 2 pin version 90123-0102 can
also used)
Pin 1 Fan Fault
Pin 2 Power Good
Pin 3 Fan Full Speed
Pin 4 Common 0V
Pin 5 Fan Full Speed
Pin 6 Common 0V (V-)
FAN 1 (Fixed Voltage)
Mates with J.S.T. housing XHP-2, termi nals: SXH-001T-P0.6; 28-22 AWG
Pin 1 +12V fan
Pin 2 Common 0V (V-)
FAN 2 (Speed controlled)
Mates with J.S.T. housing XHP-2, termi nals: SXH-001T-P0.6; 28-22 AWG
Pin 1 +12V fan
Pin 2 Common 0V (V-)
5Vsb (StandBy Output)
The 5Vsb is always “ON”, even when the power supply inhibit is activated. Note that when the supply is
inhibited or is used with convection cooli ng, the output must be de-rated to 5V 0.25A. The 5Vsb return is via
Common 0V (V-) terminal.
Remote On/Off
The CSS500 can be remotely turned on or off with either an external voltage (Vext) or closed contact.
Output inhibited (OFF) Short pin 2 to pin 3 or 0 < Vext < 0.5V
Output enabled (ON) Open circuit (floating) or 3.5 < Vext < 5.25V
The Remote On/Off return is via the Common 0V (V-) terminal.
Power Good Signal
An open collector signal indicates if the DC o utput of the CSS500 is good. An internal pull up resistor is fitted,
tied to the 5Vsb. The maximum sink current is 0.5mA. The Power Good Signal return is via the Common 0V
(V-) terminal.
High = Output good
Low = Output faulty
Fan Fault Signal
An open collector signal indicates if the fan is ope rating normally. An internal pull up resistor is fitted, tied to the
5Vsb. The maximum sink current is 0.5mA. The Fan Fault Signal return is via the Common 0V (V-) terminal.
High = Fan operating normally
Low = Fan faulty
Fan Connection & Fan Speed Control
The FAN 1 or FAN 2 connectors can be used to power an external 12VDC fan and supply up to 1A. FAN 1
provides a fixed 12V output. FAN 2 provides a variable voltage derived from a sophisticated fan controller
turning on the fan as needed and adjusting its speed according to the cooling requirements.
The FAN 2 speed controller can be over-ridden by applying a short on CN5.
Current Share (Parallel Operation)
Up to four units may be connected in parallel for either increased output power or for re dundant operation and
will share within 10% at full load. For best performan ce, the output voltages should all be set to the same v alue.
Connect the current share pins together, and ensure that the output cables to the load are the same wire gauge
and length.
Remote Sense
To compensate for up to 0.25V voltage drop in ea ch of the output cables, connect + sense to + load and –
sense to – load. Twist sense wires together to reduce noise pick up. If remote sense is not used, connect +
sense to V+ and – sense to V–.
Output Potentiometer
The output potentiometer is fitted for factory adjustment only.
Operating Temperature and Cooling
If the internal fan is specified (/T or /S option) or forced air is applied, then the CSS500 will operate as per the
blue line.
If the CSS500 is used without the internal fan option and in still air (U chan nel version), then derate the unit
according to the pink line.
The recommende d direction of the external air should be over the input terminal block, exiting over the output
terminal block. The minimum recomm ended air volume for the correct cooling is 15CFM. If the internal fan is
fitted, leave a minimum of 2” (50mm) clearance on intake an d exhaust to avoid restricting airflow.
To ensure unit reliability and to avoid over temperature shutdown, monitor temperature at the following
locations:
Dielectric Withstand (hipot)
Before applying a test voltage, ensure the following connections are jumpered:
L to N, + Output to – Output
/I version (non medical)
Primary to Secondary 4,242VDC
Primary to Chassis 2,121VDC
Secondary to Chassis 707VDC
Medical version
Primary to Secondary 5,656VDC
Primary to Chassis 2,121VDC
Secondary to Chassis 707VDC
Outline Drawing – U channel version
Outline Drawing – End fan channel version (/S)
Outline Drawing – Top Fan Version (/T)
