User manual

LABKON Series
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10 GMC-I Messtechnik GmbH
General Information
1.1 General Information
This chapter provides a general description of your power supply. And it also contains instructions relate to initial inspection,
selecting the power-line voltage, and connecting your power supply to AC power.
1.2 Safety Considerations
This power supply is a safety instrument with a protective earth terminal. The terminal must be connected to earth ground
through a power source with a 3-wire ground receptacle when being connected to AC power supply.
Before installation or operation, please check the power supply and read safety markings and instructions introduced in this
manual first. Please see relevant chapters for related specific information about safety operations.
1.3 Description
GOSSEN METRAWATT LABKON Series is a series of programmable switching-mode DC power supplies with stable
voltage and constant current. The excellent line and load regulation, extremely low ripple and noise make it well suited as a
high preference power system. LABKON Series, as a kind of high-efficient switching-mode supply, features wide supply
input voltage from 100 V AC to 240 V AC (LABKON P500) and/or 180 V AC to 265 V AC (LABKON P800), high power factor
and a minimum output of 0V.
Output voltage or current can be adjusted independently from front panel, or controlled via RS232 or GPIB interface,
respectively. Buttons and knobs on the front panel can be used to adjust voltage and current of the DC output; calibration is
possible without opening the housing in case of reduced precision (including change password for calibration); switch the
power supply from remote control mode to local mode; set and monitor the power supply over remote interface; monitor the
setting and output of power supply via the liquid crystal display in front panel, and all the status indication, error information
displayed during working.
When being controlled over remote interface, it can be used both as a listener and a speaker at the same time. The power
supply can be set and data can be returned over RS232, or GPIB interface by an external controller. The following functions
can be performed through RS232, or GPIB interface:
1. Voltage and current setting
2. Voltage and current readback
3. Enable or disable track mode
4. Present and stored status readback
5. Programming syntax error detection
6. Calibration
7. Output on/off
8. System self-test
This power supply is equipped with a liquid crystal display for displaying the output of voltage and current. A 5-digit voltage
and a 5-digit current could show the actual or setting value of a selected supply simultaneously. And the liquid crystal display
can show the current mode of power supply。
Connections to the power supply’s output and to chassis ground are made to binding terminals on the front panel. The Sense
terminals can remotely sample the power supply’s voltage. The positive and negative terminals of each output can be
grounded, or kept a certain voltage with the chassis ground. But voltage between each output and the chassis ground should
be kept within ± 240 V DC. The power supply is provided with a detachable 3-wire grounding type power cord. The AC line
fuse is on the rear panel. It can be extracted for replacement when needed.
The power supply can be calibrated from the front panel directly without opening the cabinet. Correction factors are stored in
non-volatile memory. You can guard against unauthorized calibration by using the “Standard” calibration protection function.