GSi Protek PR Series User manual

INTRODUCTION
1
WWW.GSI-PROTEK.NET
User Manual
Protek PR/PD Series
Programmable DC-Power supply
GSIPK-ENP-REV01
GS Instruments.Co,.Ltd

INTRODUCTION
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CERTIFICATION
Protek certifies that this product was thoroughly tested, inspected and found to meet published specifications when
it is shipped out of the factory. Protek further certifies that its calibration measurements are traceable to the ITRI
(Industrial Technology Research Institute/Center for Measurement Standards), and to the extent allowed by ITRI's
calibration facility.
WARRANTY PERIOD - TWO YEARS
This product is warranted for the defects in materials and workmanship for a period of Two YEARS from date of
shipment. During the warranty period, Protek will at its option, either repair or replace the products, which are proved
to be defective. Protek is not liable for incidental/consequential damages and errors caused by improper use.
WARRANTY SERVICE
Protek will repair or replace the product during the warranty period and it should be returned to your nearest Protek
authorized service center. Buyer shall prepay shipment charges to service center. After reparation, the service
center will pay shipment charges and return the product to the buyer. Buyer should prepay the freight if the product
is returned to Protek International Sale Dept. The RMA (Return Material Authorization Number) must be obtained
directly from the Protek for warranty repairs. No liability will be accepted if the returned product is without such
permission.
LIMITATION OF WARRANTY
The foregoing warranty shall not apply to any defect that is resulted from improper or inadequate maintenance by
the buyer. Protek does not warrant supplied products or interfaces that are unauthorized modification, misused,
operated outside of the specification, repaired, or maintained at the improper site. No other warranty is expressed or
implied. Protek specifically disclaims the implied warranties of merchantability and fitness for a particular purpose.
ALL RIGHTS RESERVED
No part of this publication may be produced, stored in a retrieval system, or transmitted in any form, or by means,
electronic, mechanical photocopying, recording or otherwise without prior permission of Protek.
TRADEMARK INFORMATION
Protek power supply is a trademark of GSI.
CAUTION
The following safety precautions 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. Protek shall
not be liable for user’s failure to comply with these requirements.
GROUNDING
To minimize shock hazard, the product chassis must be connected to an electrical ground. The product 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 another 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 a personal
injury.

INTRODUCTION
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OUTPUT TERMINALS GROUNDING
There is a potential shock hazard at the RS-485 and the IEEE ports when power supplies are used with rated or
combined voltage that is greater than 400V and the Positive Output of the Power Supply is grounded. Do not
connect the Positive Output to ground when the RS-485 or IEEE-488 is used.
The output terminal can be connected by external conductor, be aware that only 105 deg conductor can be used.
FUSES
Authorized Protek service personnel must change fuses only. For continued protection against risk of fire, replace
only with the same type and rating of fuse.
INPUT RATINGS
Do not use AC supply, which exceeds the input voltage and frequency rating of this instrument. The input voltage
and frequency rating of the ProtekTM power supply series is: 100-240Vac (190-240Vac for 3000W models), 50/60Hz.
For safety reasons, the mains supply voltage fluctuations should not exceed +/-10% of nominal voltage. When
considering the IEC 60320-1, the appliance inlet temperature limit relevant to mains supply voltage fluctuations
-10%, the maximum output power can be up to 750W at AC 100V input and decreasing linearity to 600W at 90V AC
input.
LIVE CIRCUITS
Operating personnel must not remove the cover of the product. Non- Protek qualified personnel allow no internal
adjustment or component replacement. Never replace components with power cable connected. To avoid injuries,
always disconnect power, discharge circuits and remove external voltage source before touching components.
PARTS SUBSTITUTIONS & MODIFICATIONS
Only authorized Protek service personnel is allowed to make parts substitutions and modifications. For repairs or
modifications, the instrument must be returned to an authorized Protek service facility.
CONDENSATION
If the environment temperature of the power supply is changed suddenly (for example the unit is moved from a cold
place to a warm place or using a heater in winter) the water dropletmay form inside the power supply. Condensation
may also occur if the power supply is exposed to the direct wind from an air-conditioner.
To avoid the harmfulness due to condensation, please let the power supply stand at room temperature for one or
two hours without connecting to the input mains power.

INTRODUCTION
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SAFETY INSTRUCTIONS
Environmental Conditions: The safety approval of Protek-PR/PDTM power supply series applies to the following
operating conditions:
(1) Indoors use
(2) Ambient temperature: 0°C to 50°C
(3) Maximum relative humidity: 90% (no condensation)
(4) Altitude: up to 3000m
CAUTION, risk of danger.
CAUTION risk of electrical shock
Indicates hazardous voltage
Frame or chases terminal.
Indicates ground terminal
Protective ground conductor terminal
OFF
ON
The WARNING sign denotes a hazard. An attention to a procedure is called. Not following
procedure correctly could result in personal injury. A WARNING sign should not be skipped
and all indicated conditions must be fully understood and met.
The CAUTION sign denotes a hazard. An attention to a procedure is called. Not following
procedure correctly could result in damage to the equipment. Do not proceed beyond a
CAUTION sign until all indicated conditions are fully understood and met.
Characters and Numbers
A 7-segment LED display cannot display all of the letters correctly, so please refer to the following list to understand
what the displayed figures represent:

TABLE OF CONTENTS
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TABLE OF CONTENTS
CHAPTER 1 ACCESSORIES CHECK BEFORE USING..................................................................................... 7
1-1. ACCESSORIES CHECK............................................................................................................................. 7
CHAPTER 2 GENERAL INFORMATION............................................................................................................ 8
CHAPTER 3 FRONT PANEL DESCRIPTION ..................................................................................................... 9
3-1. FRONT PANEL........................................................................................................................................... 9
3-2. FRONT PANELDESCRIPTION................................................................................................................. 10
CHAPTER 4 REAR PANEL DESCRIPTION ..................................................................................................... 13
4-1. REARPANEL ........................................................................................................................................... 13
4-2. REARPANELDESCRIPTION................................................................................................................... 15
CHAPTER 5 ANALOG PROGRAMMING.......................................................................................................... 22
5-1. NON-ISOLATED ANALOG PROGRAMMING PORT (STANDARD)........................................................... 22
5-2. ISOLATED ANALOG PROGRAMMING PORT (OPTIONAL)..................................................................... 25
CHAPTER 6 SERIES & PARALLEL OPERATION ........................................................................................... 27
6-1. USE FORSERIES CONNECTION ............................................................................................................ 27
6-2. USE FORPARALLEL CONNECTION........................................................................................................ 29
CHAPTER 7 LOAD CONNECTION DESCRIPTION.......................................................................................... 31
7-1.WIRING INTRODUCTION......................................................................................................................... 31
7-2. OUTPUT CONNECTIONWITHOUT REMOTE SENSE.............................................................................. 31
7-3. OUTPUT CONNECTIONWITHREMOTE SENSE..................................................................................... 32
7-4. CONSTANT-VOLTAGE &CONSTANT-CURRENTCURVE....................................................................... 32
CHAPTER 8 OPERATION INTRODUCTION..................................................................................................... 34
8-1. POWERONDISPLAY............................................................................................................................... 34
8-2. VOLTAGE SETTING &OVP SETTING...................................................................................................... 35
8-3. CURRENT SETTING &OCP SETTING..................................................................................................... 35
8-4. RECALLSETTING.................................................................................................................................... 36
8-5. STORE SETTING...................................................................................................................................... 36
8-6. SETTING MENUFOROPTIONAL GPIB MODELS.................................................................................... 36
8-7. SETTING MENUFORSTANDARD LANMODELS.................................................................................... 43
CHAPTER 9 INTERFACE CONNECTION......................................................................................................... 59
9-1. RS-485 CONNECTION ............................................................................................................................. 59
9-2. USB CONNECTION.................................................................................................................................. 59
9-3. GPIB CONNECTION................................................................................................................................. 59
9-4. ETHERNET CONNECTION ...................................................................................................................... 60
CHAPTER 10 LAN / GPIB / RS-485 COMMAND INTRODUCTION................................................................... 68
10-1. IEEE488.2INTERFACE.......................................................................................................................... 68
10-2. NUMERICPARAMETERS ...................................................................................................................... 69
10-3. SCPI COMMAND SUMMARY.................................................................................................................. 70
10-4. SCPI COMMAND.................................................................................................................................... 72

TABLE OF CONTENTS
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CHAPTER 11 ERROR CODE............................................................................................................................85
CHAPTER 12 SPECIFICATION.........................................................................................................................87
12-1. COMMON SPECIFICATION.....................................................................................................................87
12-2. 1UH 750W SPECIFICATION....................................................................................................................89
12-3. 1U 1500W SPECIFICATION.....................................................................................................................89
12-4. 2UH1500W SPECIFICATION..................................................................................................................90
12-5. 2U 3000W SPECIFICATION.....................................................................................................................90
APPENDIX 1 LOAD PROTECTION FUNCTION................................................................................................92
A1-1. HIGHCAPACITANCE LOAD ...................................................................................................................92
A1-2. RECHARGEABLE BATTERY ..................................................................................................................92
A1-3. INDUCTIVE LOAD...................................................................................................................................92
A1-4. OUTPUT ISTURNEDON/OFFWITHAMECHANICAL SWITCH..............................................................93
A1-5.WHENTHE LOADDRAWSTHE PULSE CURRENT................................................................................93
A1-6.WHENTHE LOADMAY REGENERATES AREVERSE CURRENT..........................................................94

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CHAPTER 1 ACCESSORIES CHECK BEFORE USING
1-1. ACCESSORIES CHECK
After unpacking the product, please verify the items/accessories in accordance with the ones
listed below. If there are any damages on/in the accessories, please do not hesitate to contact
our distributors or us. (*Note 1)
1-1-1. Operation manual
1-1-2. RS-485 Cable x 1
1-1-3. 19” rack installation kit (1 set, for 1U/2U models only)
1-1-4. Output protective cover (6V~100V models only)
1-1-5. Remote sense wire x2
*Note 1. AC cables are not provided with the power. The recommended AC cable (customer supplied) is:
25A 250V, 3x12AWG, 3.5 mm2, rated 60°C min., 2m max. length. Add a non-locking plug approved by the
national safety standards of the country of usage.
L-type Rack Mount
Bracket
Output Protective Cover
(6V~100V model only)
Mains Input

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CHAPTER 2 GENERAL INFORMATION
Up to 50 models: 6V~600V / 1A~400A are available for selection. (depends on different models)
750W in 1U half width, 1.5kW in 1U/2UH, 3kW in 2U height. Switching mode, high density and convenience for
installation to 19” rack.
Non-gap stacking, no ventilation holes at the cover and bottom plate of the power supply.
Universal Input Voltage 1U / 1UH / 2UH:100-240Vac, 50/60Hz, 1P2W+GND continuous operation.
2U:190-240Vac, 50/60Hz, 1P2W+GND continuous operation.
Constant Voltage / Constant Current with automatic crossover.
PROTEK DSP Series Programmable DC Power Supply uses digitalized design :
High resolution of D/A (16 bits) setting output Voltage & Current.
High resolution of A/D (24 bits H.W.) measuring output Voltage & Current.
Up to 5 units in parallel and 2 units in series, equipped with active current sharing.
Active power factor correction.
Complete Protection: OVP, OCP and OTP.
Definable output voltage ramp up and down with adjustable time.
PR/PD Series can store 16 sets of memories; memories can be recalled manually in front panel or by external
recall control.
Last Panel Set. KEY LOCK setting.
Embedded 3 RISC Micro-Controllers.
Built-in remote sensing with max. 5V compensation.(Voltage drop in each output wire(+/-) should not exceed
2.5V, or the DC power will alarm)
RS-485 baud rate up to 115200 bps.
Command response time ≤ 20ms.
Standard isolated RS-485 and LAN Interface, optional GPIB or isolated analog interface.
GPIB are compatible with SCPI.
Analog Programming and Monitoring, isolated type is available for optional selection.
Forced air by speed controlled fan.
DC Output ON / OFF Switch.
CE approved
LXI approved

CHAPTER 3 FRONT PANEL DESCRIPTION
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CHAPTER 3 FRONT PANEL DESCRIPTION
3-1. FRONT PANEL
3-1-1. 2U Front Panel
3-1-2. 1U Front Panel
3-1-3. 1UH Front Panel
3-1-4. 2UH Front Panel
To maintain good accuracy,
please provide proper room
for ventilation. Do not block
the ventilation holes in the
front and the rear parts of DC
power supplies.
Keep the panel with a space
above 20cm away from the
wall or other objects. Also,
clean the dust on the panel
regularly to avoid having
difficulty of heat radiating and
causing overheated problem.

CHAPTER 3 FRONT PANEL DESCRIPTION
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3-1-5. Front panel controls and indicators
3-2. FRONT PANEL DESCRIPTION
3-2-1. Power switch:
ION, OOFF.
3-2-2. Operation status indicators:
REMOTE
REMOTE Indicator: LED is lighting when it is remote controlled.
Press LOCAL key to disable the remote control.
ALARM
ALARM Indicator: LED is lighting when there is a command error, a manual
operation error or power unit failure. Please refer to the Chapter 11 for
ERROR CODE.
KEYLOCK
KEYLOCK Indicator: Key lock: Press KEYLOCK (SHIFT + encoder) to lock the
panel function and the LED will be lighting. Press the KEYLOCK again to unlock,
and the LED is unlit.
SHIFT
SHIFT Indicator. LED is lighting when the shift key is pressed.

CHAPTER 3 FRONT PANEL DESCRIPTION
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3-2-3. Rotary encoder:
Press the encoder to change the digits for adjustment. Turn clockwise to increase value. Turn anti-clockwise to
decrease the value. Press SHIFT + Encoder to lock the panel keys, press again to unlock the panel keys.
(1) Press the Encoder, the blinking (adjustable) digit will be moved forward to the left one. The blinking digit will be
back to the last digit after a circulation.
(2) The selected digit will be blinking slowly. Turn the Encoder to adjust value, and then press ENTER to confirm.
3-2-4. Output ON/OFF indicator:
It’s lighting when output is ON.
3-2-5. Output ON/OFF control key:
Output ON/OFF enable/disable.
The DC power supply output will be set to OFF automatically in the following situations:
(1) The P.ON MODE is set to OFF and the below situations occurred.
1. Restart the DC power supply (please refer to 8-6-3 for power on mode setting).
2. The mains supply is interruptedmore than 100ms.
3. The mains supply is exceed or under the specified input range more than 500ms.
(2) When OCP, OVP, OTP are occurred.
3-2-6. ENTER / MENU key:
(1) Press ENTER to confirm the set value.
(2) Press SHIFT+ENTER keys to get access to MENU function. For details, please refer to 8-6.

CHAPTER 3 FRONT PANEL DESCRIPTION
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3-2-7. RCL / STO key:
There are the maximum of 16 memory-recall settings can be stored. For the details, please refer to 8-4.
(1) Press RCL to recall the stored voltage/current settings in sequence.
(2) Press SHIFT + STO to store settings.
(3) Press V set key to leave the RCL mode.
3-2-8. SHIFT / LOCAL key:
(1) Whenthe DC power supply is operated manually, this key performs as sub functional key. When the light is ON,
the functions in blue-text on the panel can be manipulated.
(2) When the DC power supply is remote controlled, only the Local key is functional. Press the key to disconnect the
remote control in order to make the DC power supply operated manually.
3-2-9. A set / OCP key:
(1) Press A set key to adjust the current value, and the last digit will be blinking. By turning the Encoder, current
value is adjustable. Press ENTER to confirm.
(2) SHIFT + A set key perform as OCP set. The process of adjusting the OCP value is the same as adjusting A
set.
3-2-10. V set / OVP key:
(1) Press V set key to adjust the voltagevalue, and the last digit will be blinking. By turning the Encoder, voltage
value is adjustable. Press ENTER to confirm.
(2) SHIFT + V set key perform as OVP set. The process of adjusting the OVP value is the same as adjusting V
set.
(3) When in the Recall mode, press V set key to leave the Recall mode.
3-2-11. Current display, 4 digits LED. The indicators on the right side:
CC
Constant Current indicator. It lights when the DC power supply output is under
constant current mode.
OCP
Over Current Protection indicator. It lights when over current is occurred. When
you are adjusting over current value, the light will be blinking. The OCP will
activate when output current is over OCP value and lasting more than 1s or
output current is over 110% of rated current.
A
Ampere.
3-2-12. Voltage display, 4 digits LED. The indicators on right side:
CV
Constant Voltage indicator. It lights when the DC power supply output is under
constant voltage mode.
OVP
Over Voltage Protection indicator. It lights when over voltage is occurred. The
light will be blinking when OVP value is adjusted.
V
Voltage.
3-2-13. L-type Rack Mount Brackets:
used for fixing the unit in the standard 19" rack cabinet.

CHAPTER 4 REAR PANEL DESCRIPTION
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CHAPTER 4 REAR PANEL DESCRIPTION
4-1. REAR PANEL
4-1-1. 2U High Voltage Rear Panel (150V~600V models)
4-1-2. 2U Low Voltage Rear Panel (6V~100V models)
4-1-3. 1U High Voltage Rear Panel (150V~600V models)
4-1-4. 1U Low Voltage Rear Panel (6V~100V models)
4-1-5. 1UH High Voltage Rear Panel (150V~600V models)

CHAPTER 4 REAR PANEL DESCRIPTION
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4-1-6. 1UH Low Voltage Rear Panel (6V~100V models)
4-1-7. 2UH High Voltage Rear Panel (150V~600V models)
4-1-8. 2UH Low Voltage Rear Panel (6V~100V models)
4-1-9. 1UHx2 Rear Panel connection
Linking Brackets

CHAPTER 4 REAR PANEL DESCRIPTION
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4-2. REAR PANEL DESCRIPTION
4-2-1. The 3 pins pluggable terminal block, for connection of RS-485 interface:
When one set of DC power supply is remote controlled, through RS-485 interface, a 1/4W 120Ω terminal resistor is
required. In general, a system that its connecting distance is less than 300m does not need to use the terminal
resistor. However, to avoid having interference, it is recommended to connect a 1/4W 120Ω terminal resistor
(connect to + and –pin) at the last unit.
4-2-2. Digital programming Connector:
For GPIB remote control (Optional interface)
For LAN remote control (Standard interface)
LAN Status Indicator Color and States
State
Status
On –Solid Green, steady illumination
Normal Operation
On –Flashing Green
Device Identify
Off
LAN Fault
4-2-3. Analog programming control port:
Please refer to < Chapter 5. ANALOG CONTROL> for functions
Isolated Analog Programming port (Optional)
Non-Isolated Analog Programming port (Standard)

CHAPTER 4 REAR PANEL DESCRIPTION
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4-2-3-1. Circuit board for Series use (Optional):
Please refer to <6-1 Series Operation> for detail
4-2-3-2. Circuit board for Parallel use (Optional):
Please refer to <6-2 Parallel Operation> for detail
4-2-4. When 2 units of PR/PD (same model) are operated in series:
This connector will measure the output voltage of MASTER. The SLAVE unit will adjust the output voltage to make it
be same as the output voltage of MASTER
(1) Position 1: Connect to -OUT of MASTER
(2) Position 2: Connect +OUT of MASTER
(3) As below:
Must set SLAVE as SS
MASTER as SM (refer to Chapter 6)
MASTER
MASTER

CHAPTER 4 REAR PANEL DESCRIPTION
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4-2-5. Remote Sense/Compensation terminal:
This terminal is used to measure the voltage of load side. Please ensure to connect the correct polarity.
+S: Remote sense (+)
Not used
-S: Remote sense (–)
4-2-6. DC OUTPUT terminals:
May be changed according to different capacities.
4-2-6-1. 1UH / 2UH High Voltage (150V~600V models) DC output terminals:
4-2-6-2. 1U / 2U High Voltage (150V~600V models) DC output terminals:
4-2-6-3. 1UH Low Voltage (6V~100V models) DC output terminals:
*The usages described below may cause the damage!!
1. Connect +V out to -S
2. Connect –V out to +S
3. Connect +S to -S
M6x15 screw (2 pieces)
Flat washer (2 pieces)
Wire terminal lug (2 pieces)
Hex Nut (2 pieces)

CHAPTER 4 REAR PANEL DESCRIPTION
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4-2-6-4. 2UH Low Voltage (6V~100V models) DC output terminals:
<Side View> <Front View>
M6 Nut (2 pieces)
M6x15Hex Screw + Washer (6 pieces)

CHAPTER 4 REAR PANEL DESCRIPTION
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4-2-6-5. 1U Low Voltage (6V~100V models) DC output terminals:
<Side View> <Front View>
M6 Nut (2 pieces)
M6x15Hex Screw + Washer (2 pieces)

CHAPTER 4 REAR PANEL DESCRIPTION
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4-2-6-6. 2U Low Voltage (6V~100V models) DC output terminals:
<Side View> <Front View>
4-2-7. AC INPUT terminal block:
The input terminals may be changed according to different capacities.
*Note: When 2U model’s AC input underload, error (error code: 79) occurred and alarmed.
M6 Nut (8 pieces)
M6x15 Hex Screw + Washer (8 pieces)