User manual

GMC-I Messtechnik GmbH 15
Abbreviated Power-Up Test
In order to shorten power-up time, or if problems occur with the
normal power-up test, an abbreviated power-up test can be
used:
 With the device switched off, press and hold the <ENTER>
key.
 Turn the mains switch on.
 Release the <ENTER> key after approximately 1 second.
If this procedure is used, only essential initialization steps are run
during power-up.
After initial power-up, the device has the following basic
configuration:
 Interface functions Standard “pon” status
 Device functions
– Output status Inactive
– Voltage setpoint 0 V
– Current setpoint 0 A
– Voltage setting limit Nominal output voltage
– Current setting limit Nominal output current
– OVP trigger value 25 V (for 20 V models)
50 V (for 40 V models)
100 V (for 80 V models)
– Current limiting mode Limiting without shutdown
– Shutdown delay 0 ms
– TRIGGER input Inactive
– Min-Max measured value memory Off
– Power ON mode Reset configuration
– Manual operation Enabled
– Memory contents Deleted
The desired settings can be selected starting with this basic
configuration.
After a warm-up period of approximately 30 minutes, the
instrument operates at maximum accuracy.
When the device is powered up again at a later point in time, active
device configuration depends upon the last setting selected for
the POWER_ON function (—> page 69):
– Default settings or
– Last used device settings or
– Last used device settings with inactive output
Power-Up with RESET
In order to assure that the connected power consumer is not
endangered by any previous device settings, the device can be
initialized with the “POWER_ON RST” function by pressing and
holding the <CE/LOCAL> key during the power-up routine.
In order to switch the device off, activate the mains switch one again.
The device is then disconnected from mains power and the
output is deactivated. The last device configuration, as well as any
settings which have been saved to battery-back configuration
memory, are retained.
Caution!
Avoid switching the device on and off in a rapid, repeated fashion. This
temporarily impairs the effectiveness of the inrush current limiting
function, and may result in a blown fuse.