9
PS 9000 1U Series
PS 9000 1U Series • DC Laboratory Power Supply • User Manual
1.7.5 Alarm signals
The equipment offers various possibilities for signalling alarm conditions, however, not for danger situations. The
signals may be optical (on the display as text) acoustic (piezo buzzer) or electronic (pin/status output of an analog
interface). All alarms will cause the device to permanently or temporarily switch off the DC output.
The meaning of the signals is as follows:
Signal
OT
(OverTemperature)
•
Overheating of the device
•
DC output will be switched off temporarily
•
Non-critical
Signal
OVP
(OverVoltage)
•
Overvoltage shutdown of the DC output due to high voltage entering the device or gen-
erated by the device itself due to a defect or because the adjusted OVP threshold was
lower than the actual output voltage
•
Critical! The device and/or the load could be damaged
Signal
OCP
(OverCurrent)
•
Shutdown of the DC output due to excess of the preset limit
•
Non-critical, protects the load from excessive current consumption
Signal
OPP
(OverPower)
•
Shutdown of the DC output due to excess of the preset limit
•
Non-critical, protects the load from excessive power consumption
Signal
PF
(Power Fail)
•
DC output shutdown due to AC undervoltage or defect of the AC input circuit
•
Critical on overvoltage! AC input circuit could be damaged
1.8
Technical data
1.8.1 Approved operating conditions
•
Use only inside dry buildings
•
Ambient temperature 0-50°C
•
Operational altitude: max. 2000 m above sea level
•
Max 80% RH up to 30°C, linear decrease to 50% RH at 50°C
1.8.2 General technical data
Display:
Dot matrix, 240pt x 64pt
Controls:
2 rotary knobs with button function, 6 pushbuttons
The nominal values for the device determine the maximum adjustable ranges.
