TDK-Lambda HFE1600-48 User manual

HFE1600 Series Instruction Manual
HFE1600 SERIES SPECIFICATIONS: HFE1600-12 HFE1600-24 HFE1600-32 HFE1600-48
1 Rated output voltage V 12 24 32 48
2 Output voltage set point V 12±1% 24±1% 32±1% 48±1%
3 Output voltage range V 9.6~13.2 19.2~29.0 25.6~38.4 38.4~58
4 Rated Output Current at Vin ≥ 170Vac (*1) A 133 67 47 33
5 Rated Output Current at 100 ≤ Vin ≤ 132Vac (*1) A 100 50 37.5 25
6 Rated Output Current at 85V ≤Vin < 100Vac (*1) A Linear derating 1% per 1VAC from output current at 100VAC:
7 Rated output power Vin ≥ 170Vac W
1596 1608 1500 1584
8 Rated output power 100 ≤ Vin ≤ 132Vac W 1200 1200 1200 1200
9 Rated output power 85Vac ≤ Vin < 100Vac W Linear derating 1% per V
10 Input voltage / frequency range (*2) --- 85~265Vac continuous, 47~63Hz, Single phase
11 Maximum input current (115/230Vac) A 12.4/8.1
12 Power Factor (Typ) (100/230Vac) at full load --- >0.99/0.98
13 Efficiency at 75% rated load (Typ) (*3) %
87/90% 88/90% 88/90% 89/92%
14 Efficiency at 100% rated load (Typ) (*3) % 87/90% 87/90% 87/90% 88/91%
15 Inrush current (*4) A Less than 35A
16 Hold-up time mS ≥ 10mS typical at 115/230Vac input,
rated output voltage and less than 80% of rated load.
17 Maximum line regulation (*5) %
0.25%
18 Max load regulation (*6) % 0.50%
19 Output Ripple and noise P-P (*7) 0~+70°C mV
240 240 320 480
-10~0°C mV 360 360 580 780
20 Temperature stability % 0.05% of rated Vout for 8hrs after 30min warm-up.
Constant line, load and temperature.
21 Temperature coefficient of output voltage PPM/°C
±200
22 Remote sensing (*8) --- Refer to instruction manual.
23 Parallel operation (*9) ---
Single wire current share, 5% accuracy of rated Iout, up to 10 units
of the same voltage and the same current rating.
24 Series operation --- (with external diodes), 2 units. Refer to instruction manual.
25 Over current protection 85 ≤ Vin ≤ 132Vac %Minimum 105% of rated output current.
170 ≤ Vin ≤ 265Vac
105~120% of rated output current.
26 Over voltage protection (*10) V Tracking OVP, range: 1.1xVout ,Accuracy:
±3 %,
Refer to Instruction Manual.
27 Over temperature protection --- Inverter shut down, automatic restart.
28 Remote On/Off control --- Two complementary inputs. By electrical signal or dry contact.
Refer to instruction manual.
29 "DC OK" signal (*13) --- Tracking, On when Vout>90±5% of set output voltage.
Open collector signal. Max sink current: 10 mA.
30 Over-Temperature warning (*13) --- Refer to instruction manual.
Open collector signal. Max sink current: 10 mA.
31 "AC FAIL" signal (*13) --- On when 85Vac<Vin<270Vac.
Open collector signal. Max sink current: 10 mA.
32 Auxiliary power supply output (*11) --- 11.2~12.5V, 0.5A. 240mVp-p ripple and noise
33 Vout programming by external voltage ---
By 0~5V, equal to Vout min ~ Vout max . Refer to Instruction Manual.
34 Vout programming by external resistor --- By 1Kohm potentiometer . Refer to Instruction Manual.
35 Front panel indicators --- AC OK, DC OK/FAIL
36 I²C Interface --- Optional, PMBus compatible. Refer to Instruction Manual.
37 Operating temperature (*14) --- -10~+50°C. 100% load.
+50°C to +60°C Derate Output by 2%/°C.
+60°C to +70°C Derate Output by 2.5%/°C.
38 Storage temperature --- -30~85°C
39 Operating humidity --- 10~90% RH, no condensation.
40 Storage humidity --- 10~95% RH, no condensation.
41 Cooling --- By internal Fans. Variable speed control
based on ambient temperature and power level.
42 Vibration --- Built to meet IEC60068-2-64 (Basic Transportation)
43 Shock --- Built to meet IEC60068-2-27 (Basic Transportation)
44 Conducted emission ---
Built to meet EN55022 Class B, FCC part 15 Class-B, VCCI Class-B
45 Radiated emission --- Built to meet EN55022 Class A, FCC part 15 Class-A, VCCI Class-A
46 Immunity --- Built to meet IEC61000-4-2 (Level 2,3), -3 (Level 2), -4 (Level 2),
-5 (Level 3,4), -6 (Level 2), -8 (Level 4), -11
47 Applicable safety standards --- UL60950-1 Second Edition, EN60950-1 Second Edition
48 Withstand voltage
Input-Output: --- 3000Vrms, 1min.
Input-Ground: --- 2000Vrms, 1min.
Output - Ground: --- 500VAC 1min. 500VAC 1min. 500VAC 1min.
2250VDC 1min (POE)
49 Insulation resistance --- More than 100MΩ at 25°C and 70% RH. Output-Ground: 500Vdc
50 Leakage current (*12) mA Less Than 0.75/1.5mA at 115/230Vac range
51 Weight (Typ) Kg Max. 1.55
52 Size (W*H*D) --- 85x41x300mm. Refer to Outline Drawing.
1

Fig-1 HFE1600 rated output Current and Voltage versus Line Voltage.
* Please refer to Output Power vs. Temp derating
Notes:
*1 Refer to Fig-1 below.
*2 In case where conformance to various safety standards is required,
to be described as 100-240Vac (50/60Hz).
*3 115/230Vac, 25˚C ambient temperature.
*4 Not applicable for the noise filter inrush current less than 0.2mS.
*5 From 85~132Vac, or 170~265Vac, constant load.
*6 From No-load to Rated load, constant input voltage.
*7 Measured with JEITA-RC9131A 1:1 probe with 2x270μF electrolytic capacitors
and 1μF film capacitor on the output. 20MHz B.W.
When power supplies are installed in HFE-1600-S1U shelf, measured with 1μF film capacitor on the output terminals.
*8 Voltage drop on load wires: HFE1600-12: 0.25V/wire, HFE1600-24: 0.5V/wire, HFE1600-32: 0.75V/wire,
and HFE1600-48: 1V/wire.
*9 Accuracy applicable for load current > 50% of rated output current. Derate maximum output power by 5%.
*10 Inverter shut down method. Reset by recycle AC voltage, or by On/Off control.
*11 Measured with JEITA-RC9131A 1:1 probe using 470μF electrolytic capacitor
and 0.1μF film capacitor on the output. 20MHz B.W.
When power supplies are installed in HFE-1600-S1U shelf, capacitors not required.
*12 Measured according to UL/EN method at 60Hz 25˚C ambient temperature.
*13 Open collector signal. Maximum sink current: 10mA, maximum voltage 15V.
*14 Refer to Output Power vs temp derating figure A,B,C. (Pg. 3)
Iout
133A
121A
100A
91A
85A
76A
Vin
85Vac
100Vac
132Vac
170Vac
265Vac
9.6~12V
13.2V
HFE 1600-12
9.6~12V
13.2V
HFE 1600-12
Iout
67A
56A
50A
42.5A
34A
Vin
85Vac
100Vac
132Vac
170Vac
265Vac
19.2~24V
29V
HFE 1600-24
19.2~24V
29V
HFE 1600-24
Iout
33A
28A
25A
21A
17A
Vin
85Vac
100Vac
132Vac
170Vac
265Vac
38.4~48V
58V
HFE 1600-48
38.4~48V
58V
HFE 1600-48 1584W Max
1200W Max*
1000W Max*
*
1608W Max
1200W Max*
1000W Max*
*1596W Max
1200W Max*
1000W Max*
*
Iout
47A
39A
37.5A
31.5A
26A
Vin
85Vac
100Vac
132Vac
170Vac
265Vac
38.4~48V
58V
25.6~32V
38.4V
HFE 1600-32 1504W Max
1200W Max*
1000W Max*
*
2

Output Power vs. Temp derating
Pout
1600W
1200W
1100W
1000W
Vin
85Vac
All Output Voltages
Fig A. Output Power at temp -10~50°C.
Pout
1280W
960W
880W
800W
Vin
85Vac 100Vac 132Vac 170Vac 265Vac
All Output Voltages
Pout
960W
720W
660W
600W
Vin
85Vac 100Vac 132Vac 170Vac 265Vac
All Output Voltages
100Vac 132Vac 170Vac 265Vac
HFE 1600-12, 24,48 Series
HFE 1600-12, 24,48 Series
HFE 1600-12, 24,48 Series
Fig B. Output Power derating at temp 60°C.
Fig C. Output Power derating at temp 70°C.
Pout
1500W
1200W
1100W
1000W
Vin
85Vac
All Output Voltages
Fig A1. Output Power at temp -10~50°C.
Pout
1200W
960W
880W
800W
Vin
85Vac 100Vac 132Vac 170Vac 265Vac
All Output Voltages
Pout
900W
720W
660W
600W
Vin
85Vac 100Vac 132Vac 170Vac 265Vac
All Output Voltages
100Vac 132Vac 170Vac 265Vac
HFE 1600-32
HFE 1600-32
HFE 1600-32
Fig B1. Output Power derating at temp 60°C.
Fig C1. Output Power derating at temp 70°C.
3

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PIN No FUNCTION PIN No FUNCTION A1 ~ A5 -V OUT B12 INHIBIT A6 ~ A10 +V OUT B13 NC B1 SIGNAL RETURN B14 NC B2 PS EXIST B15 DC OK B3 AUX_OUT (+12V) B16 NC B4 -SENSE B17 NC B5 NC B18 TEMP. ALARM B6 CURRENT SHARE B19 V REFERENCE OUT B7 ENABLE B20 NC B8 VOLTAGE ROGRAMMING B21 AC FAIL B9 +SENSE C1 CHASSIS GROUND B10 NC C2 AC NEUTRAL B11 NC C3 AC LI NE
HFE 1600 Series Outline Drawing
4

REAR PANEL IN/OUT CONNECTOR PINS FUNCTION DESCRIPTION
Pin # Function Description Referenced to
A1 ~ A5 -V Main Negative Output Voltage
A6 ~ A10 +V Main Positive Output Voltage
B1 SIGNAL RETURN
Return for the following control signals: ENABLE, INHIBIT;
supervisory signals TEMP ALARM, AC FAIL, AUX , DC OK, PS EXIST;
and PMBus signals: SCL, SDA, SMB ALERT;
SIGNAL RETURN and mentioned signals are isolated from the output
terminals and -SENSE.
SIGNAL RETURN
B2 PS EXIST Indicates that Power Supply module is inserted into the shelf. "Active
Low" when connected to SIGNAL RETURN. SIGNAL RETURN
B3 +12V AUX OUT
11.2~12.5V Auxiliary Voltage Output referenced to SIGNAL RETURN. The
maximum load current is 0.5A. This output has a built in ORing diode, and
is not affected by the INHIBIT /ENABLE signal or any other fault.
SIGNAL RETURN
B4 -SENSE Negative sense, The -SENSE signal should be connected to -V on
Power Supply, or Load side. -SENSE
B5,B10, B11, B13,
B14, B16, B17, B20
NOT CONNECTED
B6 CURRENT SHARE Current sharing signal should be connected when Power Supplies are connected in parallel to allow accurate current share between units in
Parallel operation. -SENSE
B7 (short pin) ENABLE
Turns ON the main output by electrical signal or dry contact (0~0.6v or short). SIGNAL RETURN
B8 VOLTAGE PROGRAMMING Input (0~5V) referenced to –S. Provides Vout programming by Voltage.
Refer to Instruction Manual Chapter 1.5,1.6 -SENSE
B9 +SENSE Positive sense. The +SENSE signal should be connected to +V on
Power Supply, or Load side. -SENSE
B12 INHIBIT
Turns OFF the main output by electrical signal or dry contact (0~0.6v or short). SIGNAL RETURN
B15 DC OK DC OK signal. LOW when the output voltage is higher than 85~95% of
set Vout. Open collector type (15V, 10mA). SIGNAL RETURN
B18 TEMP ALARM TEMP ALARM signal. LOW when the internal temperature is within safe limit, HIGH approx. 10°C below Thermal shut down. Open collector
type (15V, 10mA). SIGNAL RETURN
B19 +5V/V_REF
5V fix output for standard option unit. Variable when Voltage
programming is done with PMBus option.
-SENSE
B21 AC FAIL AC FAIL Signal, LOW when the input voltage is 85Vac<Vin<270Vac, HIGH when the input voltage is 85Vac>Vin or Vin>270Vac. Open
collector type (15V, 10mA). SIGNAL RETURN
C1 (long pin) PROTECTIVE
GROUND AC GROUND connection. Refer to safety instructions for safety standards requirements
C2 (long pin) AC
NEUTRAL
AC NEUTRAL refer to safety instructions for safety standards requirements
C3 (long pin) AC
LINE
AC LINE refer to safety instructions for safety standards requirements.
REAR CONNECTOR PIN ALLOCATION CHART
A1
A2 A6 A10 B3 B21
A5
C1 C2 C3
A9 B1 B19
IN/OUTPUT CONNECTOR POSITRONIC P/N: PCIM34W13M400A1/AA
5

SAFETY APPROVALS
UL 60950-1 and CSA22.2 No.60950-1 - UL Recognized. C-UL for Canada.
IEC 60950-1 - CB Report and Certificate.
EN 60950-1 - CE mark.
Marking by the CE Symbol indicates compliance to the Low Voltage Directive of the European Union.
A“Declaration of Conformity”in accordance with the preceding directives and standards has been made and is on file at our EU
representative TDK LAMBDA UK, located at Kingsley Avenue, Ilfracombe, Devon EX34 8ES, UK.
A“Declaration of Conformity”may be accessed via company website www.uk.tdk-lambda.com/technical-data
SAFETY INSTRUCTIONS
CAUTION: The following safety precaution must be observed during all phases of operation, service and repair of this equipment.
Failure to comply with the safety precautions or warnings in this document violates safety standards of design, manufacture and
intended use of this equipment and may impair the built-in protections within. TDK Lambda shall not be liable for user’s failure to
comply with these requirements.
Vorsicht
Die folgenden Sicherheitsvorschriften müssen vor Inbetriebnahme und in jedem Betriebszustand bei Service oder Reparatur
beachtet werden. Missachtung der Sicherheitsvorschriften und Warnhinweise aus diesem Handbuch führen zur Verletzung
der bestehenden Sicherheitsstandards. Bei Betrieb des Gerätes ausserhalb dem bestimmungsgemässen Einsatz können die im
Gerät integrierten Schutzfunktionen beeinträchtigt werden. TDK-Lambda ist nicht haftbar für Schäden, die durch Missachtung
dieser Sicherheitsvorschriften entstehen können.
CAUTION: HFE1600-xy units are not authorized for use as critical component in nuclear control systems, life support systems or
equipment for use in hazardous environments without the express written approval of the managing director of TDK-Lambda.
Vorsicht
Dieses Produkt ist nicht für die Verwendung als kritische Komponente in nuklearen Steuerungssystemen, lebenserhaltenden
Systemen oder Geräte für den Einsatz in gefährlichen Umgebungen, ohne die ausdrückliche schriftliche Genehmigung durch
TDK-Lambda zugelassen
POWER SYSTEM, OVERVOLTAGE CATEGORY & ENVIRONMENTAL CONDITIONS
The HFE1600-xy units have been evaluated for using in TT and IT (230VAC line - to - line) power systems.
The HFE1600-xy units have been evaluated to Overvoltage category II.
The HFE1600-xy units intended for use in the following operation conditions:
* Indoor use * Pollution degree 2 * Max. operational altitude: 3000m above sea level
*Ambient temperature: -10°C-50°C at 100% load, up to 70°C with output de-rating applied (refer to Specification above).
GROUNDING
HFE1600-xy units are Class I product. To minimize electrical shock hazard, the HFE1600-xy units must be connected to an electrical
ground. The instruments must be connected to the AC power supply mains through a three conductor power cable, with the
ground wire firmly connected to an electrical ground (safety ground) at the power outlet. For instruments designed to be hard-
wired to the supply mains, the protective earth terminal must be connected to the safety electrical ground before any other
connection is made. Any interruption of the protective ground conductor or disconnection of the protective earth terminal will
cause a potential shock hazard that might cause personal injury.
Erdungskonzept
Dieses Produkt ist ein Gerät der Schutzklasse 1. Zur Vermeidung von gefährlichen Energieinhalten und Spannungen, ist das
Gehäuse an eine Schutzerde anzuschliessen. Der PE-Anschluss ist an einen festen Erder anzuschliessen. Bei Festverdrahtung des
Gerätes ist sicherzustellen, dass der PE Anschluss als erstes angeklemmt wird. Jede mögliche Unterbrechung des PE-Leiters oder
Trennung der PE Verbindung kann einen möglichen elektrischen Schlag hervorrufen, der Personenschäden zur Folge hätte.
LIVE CIRCUITS
Operating personnel must not remove the HFE1600-xy unit cover.
No internal adjustment or component replacement is allowed by non-TDK Lambda qualified service personnel. Never replace
components with power cable connected. To avoid injuries, always disconnect power, discharge circuits and remove external
voltage sources before touching components.
Restricted Access Area: HFE1600-xy units should only be installed in a Restricted Access Area. Access should be available to service personnel only.
Spannungsführende Teile
Die Geräteabdeckung darf nicht durch Endanwender geöffnet werden. Interne Modifikationen, sowie Bauteileaustausch
ist nur durch TDK-Lambda qualifiziertes Personal erlaubt. Vor Austausch von Bauteilen ist das Netzkabel bzw. die
Versorgungsspannung zu trennen. Energieversorgungsanschlüsse sind immer zu trennen, um Personenschäden durch
gefährliche Energieinhalte und Spannungen auszuschliessen. Die Stromkreise sind zu entladen, externe Spannungsquellen
sind zu entfernen, bevor auf Bauteile bzw. Komponenten Ebene gearbeitet wird.
6

VORSICHT Spannungsführende Teile-Gefahr durch elektrischen Schlag bzw. Energieinhalte.
Handbuch-Symbol. Das Gerät bzw. Geräteteile warden mit diesem Symbol gekennzeichnet, wenn es für den
Benutzer notwendig ist, sich auf die Anweisungen im Handbuch zu beziehen.
Zeigt“spannungsführende Teile”mit gefährlicher Spannung an.
Dieses Symbol weist auf das Vorhandensein einer heißen Oberfläche oder Komponente. Das Berühren
dieser Oberfläche kann zu Verletzungen führen.
Zeigt Masse-Anschluss an, keine Schutzerde. ( z.B .Masseanschluss an einen Verbraucher).
Schutzleiter-Anschlussklemme.
WARNUNG Dieser Warnhinweis beschreibt Gefahren, deren Nichteinhaltung zu Personenschäden führen können. Die
Warnhinweise müssen daher zwingend wie im Handbuch beschrieben in der Applikation eingehalten
werden.
ACHTUNG
Diese Sicherheitsinformation weist auf Gefahren im täglichen Umgang mit dem Gerät hin, deren
Missachtung zu Fehlfunktionen oder Defekten in deer Applikation führen können. Bitte lesen Sie diese
Sicherheitsinformationen , bevor Sie das Gerät einbauen oder in Betrieb nehmen.
PARTS SUBSTITUTIONS & MODIFICATIONS
Parts substitutions and modifications are authorized TDK Lambda service personnel only. For repairs or modifications, the
instrument must be returned to TDK Lambda service facility.
AC INPUT
Do not connect HFE1600-xv unit to mains supply exceeding the input voltage and frequency rating. The input voltage and
frequency rating is: 100-240V~, 50/60Hz. For safety reasons, the mains supply voltage fluctuations should not exceed ±10% of
nominal voltage.
HEAT HAZARD
WARNING: Top, bottom and side surfaces may become hot when operating the unit continuously. To reduce the risk of injury from a
hot surface, allow the surface to cool before touching.
Heisse Oberflächen
WARNUNG: Im Dauerbetrieb erwärmen sich die Gehäuseoberflächen. Um das Verletzungs-Risiko durch heisse Oberflächen zu
minimieren, sollte das Gerät einige Zeit abkühlen können, bevor weitere Arbeiten durchgeführt werden.
ENERGY HAZARD
The main output of HFE1600-xy units is capable of providing hazardous energy. Due to hazardous energy level the output and
connections therefore must not be user accessible. Manufacturer’s final equipment must provide protection to service personnel
against inadvertent contact with output bus bars.
FUSE
Internal fuse is sized for fault protection and if a fuse was opened it would indicate that service is required. Fuse replacement
should be made by qualified technical personnel.
HFE1600-xy unit fuse rating is described below. F101: F20A H 250Vac
SICHERUNGEN
Vor Anschluss an die Netzversorgung ist die Aufstellanleitung zu beachten!
1. Absicherung: F1 01: F20A H 250VAC
2. Die Gehäuseabdeckung darf nur im stromlosen Zustand geöffnet werden.
ACHTUNG: Sicherungen dürfen nur durch geschulte Service Personen getauscht werden.
OVERCURRENT PROTECTION:
A readily accessible branch circuit over-current protective device rated 30A max. must be incorporated in the building wiring.
The protective device must be disconnect both supply line simultaneously
Überstromschutz
Eine leicht zugängliche Vorsicherung mit 30A max.. pro Eingang muss in der Hausinstallation vorgesehen werden
SYMBOLS
7

ATTENTION: Power supplies are factory programmed to the rated output voltage.
For applications requiring lower / higher voltage, power supplies should be adjusted to the required voltage
before connection to the load.
1. SINGLE UNIT OPERATION
1.1 Basic configuration (Local Sense)
For basic configuration:
•± SENSE have to be connected to the HFE1600 ±V terminals prior to operating the supply.
•ENABLE input must be connected to SIGNAL RETURN in order for the supply to turn on.
+V
A6~10
-V
A1~5
+SENSE
B9
-SENSE
B4
ENABLE
B7
HFE1600
+V
-V
B1
SIGNAL RETURN
LOAD
Fig-1.1
12
FRONT PANEL INDICATORS
1. DC OK – LED indicator:
GREEN when Output Voltage is above 90% ± 5% of set Output Voltage.
RED when Output Voltage falls below 90% ± 5% of set Output Voltage.
2. AC OK – LED indicator:
GREEN when Input Voltage is 85Vac<Vin<270Vac.
OFF when the Input Voltage is 85Vac>Vin or Vin>270Vac.
CAUTION: When inserting a power supply into the rack, do not use unnecessary force;
slamming the power supply into the rack can damage the connectors on the rear of the supply and inside the rack.
8

1.4 ON/OFF control by INHIBIT
Power Supply operation requires the "ENABLE" signal to be connected to "Signal Return".
Logic of the "INHIBIT" signal is reversed to logic of the "ENABLE" signal.
Switch closed: Output OFF
Switch open: Output ON
SIGNAL RETURN, INHIBIT and ENABLE controls are isolated from the output terminals and -SENSE.
1.5 OUTPUT VOLTAGE PROGRAMMING by External Potentiometer (Not applicable to supplies with PMBUS option).
Output Voltage of HFE1600 Series can be trimmed by potentiometer between approximately 80%-120% for 24V, 32V, 48V
and 80%-110% for 12V of nominal output voltage (For Output voltage limits see Graph below).
Fig-1.5
Fig-1.4
Fig 1-5
36
48
59
18
24
29
9.6 12
13.2
24
32
39.5
0
10
20
30
40
50
60
%001%05%0
V OUT (V)
Viper position
Voltage Trimming by potentiometer
Fig 1-5
HFE1600-48
HFE1600-24
HFE1600-12
HFE1600-32
1.2 Basic configuration (Remote Sense)
For basic configuration:
•± SENSE have to be connected to the ±V terminals on the Load side prior to operating the supply.
•ENABLE input must be connected to SIGNAL RETURN in order for the supply to turn on.
ENABLE
B7
-SENSE
Voltage drop
on load connection
+V
+SENSE
A6~10
B9
B4
-V
A1~5
HFE1600
LOAD
+V
-V
B1
SIGNAL RETURN
Voltage drop
on load connection
Fig-1.2
ATTENTION: 1. Maximum voltage drop on load connection: HFE1600-12: 0.25V/wire, HFE1600-24: 0.5V/wire,
HFE1600-32: 0.75V/wire, HFE1600-48: 1V/wire.
2. Twisted wires should be used for Remote Sensing connection.
3. If Remote Sensing is used, do not break Main Output connection.
1.3 ON/OFF control by ENABLE
ENABLE
B7
HFE1600
B1
SIGNAL RETURN
Switch closed: Output ON
Switch open: Output OFF
Fig-1.3 SIGNAL RETURN and ENABLE control are isolated from the output terminals and “-SENSE”.
9

Fig-1.6
1.7 SUPERVISORY SIGNALS (Typical Connection)
The following supervisory signals are accessible:
•DC OK
•AC FAIL
•PS EXIST
•TEMP ALARM
Fig-1.7
SIGNAL RETURN and mentioned signals are isolated from the output terminals and -SENSE.
These signals are Open Collector type (max 15V, max 10mA) shunted by internal 24V zener,
isolated from Output and referenced to“SIGNAL RETURN”.
Fig-1.8
Open collector signals are shunted by internal 24V zener
1.6. OUTPUT VOLTAGE PROGRAMMING by External Voltage.
Output Voltage of HFE1600 Series can be programmed by external voltage source between approximately 80%-120% for
24V, 32V, 48V and 80%-110% for 12V of nominal output voltage (For Output voltage limits see Graph enclosed).
58
38.4
29
13.2
HFE1600-48
HFE1600-24
HFE1600-32
HFE1600-12
10

2. POWER SUPPLIES CONNECTION
2.1. PARALLEL OPERATION
-V
SIGNAL RETURN
B1
B9
-SENSE
B4
A1~5
B6
CURRENT SHARE
+V
A6~10
HFE1600
-V
A1~5
+SENSE
B9
-SENSE
B4
ENABLE
B7
B1
CURRENT SHARE
B6
HFE1600
+V
A6~10
-SENSE
B4
+SENSE
B9
ENABLE
B7
-V
A1~5
B6
ENABLE
B1
+SENSE
B7
HFE1600
LOAD
+V
A6~10
+V
+S
-S
SIGNAL RETURN
-V
SIGNAL RETURN
CURRENT SHARE
•Up to 10 x HFE1600 units with the same rating (voltage
and current) can be used in parallel to increase the output
current.
•By connecting the CS signal between the paralleled units,
automatic current balance is achieved with accuracy of
Accuracy ±10%: 20% ≤ Iout < 50% of max Iout.
Up to 10 units
Accuracy ±5%: Iout ≥ 50% of max Iout.
Up to 10 units
•Derate the total output current by 5% when using parallel
operation to prevent unit overload condition.
•The built-in ORing MOSFETs on the main output and the
12V Auxiliary output allow N+1 operation.
•If Voltage programming is used,“Voltage Programming”Pin
of all units must be connected in parallel.
•Referenced to “SIGNAL RETURN”(floating from the output)
controls/signals and +12V AUX can be connected in parallel.
•ENABLE of all supplies can be connected to a single switch.
Fig-2.1
11

2.2 SERIES OPERATION
•Up to 2 units with the same rating (voltage and current) can be used in series to increase the output voltage:
•Connect Main Output in series (as shown);
•Diodes should be connected in parallel with each unit output to prevent reverse voltage. Each diode should be rated to at least
the power supply rated output voltage and output current.
•Connect as shown : +Sense of positive unit and –Sense of negative unit (twisted pair) to Load point, or to +V and –V accordingly
for Local Sense;
•Output Voltage can be adjusted independently for each unit.
•Controls Monitoring signals and +12V AUX are referenced to“SIGNAL RETURN”and may be connected in parallel.
Fig 2.2 HFE1600 series connection (remote sense configuration)
-V
A6~10
-V
A1~5
B1
+V
A6~10
HFE1600
B1
SIGNAL RETURN
-SENSE
B4
-V
A1~5
+SENSE
B9
B4
-SENSE
+SENSE
B9
+V
SIGNAL RETURN
ENABLE
B7
LOAD
ENABLE
B7
+V
HFE1600
*Diodes rated for at least Vout max and lout max
are supplied by user.
IA688-04-01-Rev I
12