Chroma 63610-80-20 Operation & Programming Manual page 72

Programmable DC Electronic Load 63600 Series Operation & Programming Manual
The appropriate bits in the Mainframe's status registers are set when any of the protection
features listed above is active. The Load's buzzer will beep to inform you till the protection
status is reset. When any of the protections occurs, the Load input will turn off.
●
Over Voltage Warning
The over voltage protection circuit is set at a level slightly above the voltage range
specified in the Load specification. The over voltage (OV) and voltage fault (VF) status
register bits are set when the OV condition occurs and will remain set till they are reset.
The Load module will appear OVP when over voltage protection occurs.
●
Over Current Protection
When the Load is operating in CR or CV mode, it is possible for a module to attempt to
sink current more than it is rated for. The limit level of current is set at a level slightly
above the current of the Load. The over current (OC) and current error (CE) status
register bits are set when the OC condition occurs, and will remain set till they are reset.
The Load module will appear OCP when over current protection occurs.
●
Over Power Protection
The overpower protection circuit is set at a level slightly above the power range
specified in the Load specifications. The over power (OP) and power error (PE) status
register bits are set when the OP condition occurs, and will remain set till they are reset.
The Load module will appear OPP when overpower protection occurs.
●
Over Temperature Protection
Each Load has an over temperature protection circuit, which will turn off the load if
internal temperature exceeds the safety limit. The over temperature (OT) and
temperature error (TE) status register bits are set when the OT condition occurs, and
will remain set till they are reset. The Load module will appear OTP when over
temperature protection occurs.
●
Reverse Voltage Warning
The Load conducts a reverse current when the UUT polarity connection is not correct.
The maximum safe reverse current is same as the Load rated current. If the UUT
reverse current is over the rated current of Load, the Load may be damaged. If a
reverse voltage condition is detected, you must turn off the power to UUT immediately,
and correct the connection. The reverse voltage (RV) and voltage fault (VF) status
register bits are set when the RV condition occurs, and will remain set till they are reset.
The Load module will appear REV when reverse voltage protection occurs.
●
Max sine wave current
When the LOAD is operating under SINE WAVE DYNA function, the panel will show
"MAX LIM" once the loading current caused the voltage to change exceedingly beyond
the condition allowed.
All of the above protection features will latch when they are tripped. When any of the
protections occurs the module will turn off the load input, and beep till you remove the
condition and reset the protection by pressing
CAUTION To protect the Electronic Load from possible damage, the input voltage
must not exceed the maximum input voltage rating specification. In
addition, the Load + terminal potential must be higher than the − terminal
potential.
3-20
ENTER
key on the module.