User manual

GMC-I Messtechnik GmbH 5
1 Technical Description
1.1 Features and Range of Applications
SSP KONSTANTERs (single-output system power supplies) are
manual and remote controllable DC power supplies for laboratory
and system use. Despite high output power, the power supplies
are small and lightweight.
The floating output features “safety electrical separation” from the
mains input as well as optional computer interfaces, and is
classified as a safety extra-low voltage circuit (SELV) in
accordance with VDE/IEC. Wide ranging nominal power values
are available from the voltage and current controlled output.
The devices are generally equipped with a control panel and
display, as well as an analog interface.
An additional interface can be plugged into the device for
integration into computer controlled systems. Two interface
variants are available to this end, as described in chapter 1.3.
Manual adjustment of voltage and current is accomplished by
means of two rotary knobs with selectable adjusting sensitivity.
Numerous additional functions can be activated with various keys
(see table below).
Two 4-place digital LED displays read out measured values and
settings. LEDs indicate the current operating mode, selected
display parameters and the status of device and interface
functions.
The analog interface can be used to set output voltage and
current with the help of external control voltages, and also serves
to link several devices for master-slave operation. Deactivation of
the output, control panel disabling and individual or sequential
retrieval of saved settings can be controlled via the floating
optocoupler input.
1.2 Functions
Adjustable functions:
– Voltage and current setpoint values
– Voltage and current limit values (soft-limits)
– Activate / deactivate the output
– Overvoltage protection trigger value
– Overcurrent response (limiting with or without shutdown)
– Delay time for overcurrent protection
– Starting performance (power-on status)
– Reset device settings
– Save device settings
– Recall device settings individually or sequentially
– Control panel disabling
– Function selection for trigger input
– Round off measured value for display
– Service request masks (SRQ masks)
1
– Activate/deactivate digital displays
1
– Self-triggering when mains power is switched on
1
Retrievable information:
– Momentary measured voltage and current values
– Minimum and maximum measured voltage and current values
– Momentary output power
– Current device settings (individual or complete)
– Current device status (control mode, overtemperature, busy)
1
– Occurred events (mains or phase failure, overtemperature,
overvoltage, overload, programming error)
1
–Device ID
1
Additional Functions
– Sensor terminals protected against polarity reversal and
automatic switching to auto-sensing
– Overtemperature protection
– Output protected against reverse polarity
– Backup battery for device settings memory
– Recognition of mains or phase failure
– Inrush current limiting
1)
Via computer interfaces only
1.3 Options and Accessories
Devices can be equipped with a plug-in interface module (2
variants) for integration of SSP KONSTANTERs into computer
controlled systems.
Variant 1 includes one digital computer interface:
– One V.24 / RS 232C bit-serial interface
This interface is provided in minimized format only
(conductors: RxD, TxD, GND).
Variant 2 includes two digital computer interfaces:
– One IEC 625 bit-parallel, byte-serial interface
This interface fulfills all requirements of the IEEE 488 standard
and is commonly designated as a GPIB (general purpose
interface bus) or an HP-IB (Hewlett Packard interface bus).
– One V.24 / RS 232C bit-serial interface
This interface is provided in minimized format only
(conductors: RxD, TxD, GND).
Programming of all device functions, as well as querying of
measured and configured parameters is possible via both
interfaces. The IEC bus interface provides several additional,
specific interface functions.
The interface option is supplied as a separate plug-in module and
can be easily plugged into the device at the rear.
Included accessories:
– 1 set operating instructions
– 1 mounting kit for rack installation
– 1 mains power cable with earthing contact plug
(for 62 N only)
Additionally available accessories:
– RS 232 bus cable
– IEEE – IEEE bus cable
– Device driver for LabView software
– Device driver for LabWindows / CVI software
– Device driver for HPVEE / VXI PnP software