Document type:
Title:
Revision date:
Revision:
User's Manual (MUT)
Mod. SY2527, Universal Multichannel Power Supply System
27/11/2000
0
NPO:
Filename:
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Page:
00103/97:2527y.MUTx/00
SY2527USERMANUAL_REV0.DOC
84
31
4.4.12
IMON
Current Monitored value.
It can be monitored either via Local or Remote Control.
4.4.13
TRIP
It is the maximum time an
Overcurrent
condition is allowed to last. If an
Overcurrent
condition lasts for more than the programmed value, the System will react in the
following ways:
If
Trip = 1000
:
Constant Current mode
.
The over current condition may last indefinitely.
If the Board has programmable current hardware protections, the output voltage is
varied to keep the current below the programmed limit (I0SET or I1SET, according
to the ISEL signal level). The channel behaves like a current generator.
If the Board has fixed current hardware protections, the output current is permitted
to exceed the ISET value; the channel behaves like a current generator only if the
maximum current value is reached.
If
0 < Trip < 1000
:
Trip mode
.
The over current condition will cause the channel to "Trip": after an interval of time
(equal to the Trip value) during which it behaves as in the constant CURRENT
mode, the channel is switched off according to the selected POWER-DOWN option
(KILL/RAMP). If the KILL option is selected, the channel will be switched off at the
maximum rate available. If the RAMP option is selected, the voltage will drop to
zero at a rate determined by the value of the RAMP parameter programmed for that
channel.
The TRIP function is implemented by using a counter (TRIP counter) which is set to the
programmed TRIP value each time one of the following actions is performed:
•
the user sets the TRIP value;
•
the user executes a clear alarm;
•
the user powers on the channel (POWER parameter);
•
otherwise, when the channel is no more in Over Current condition before the
programmed TRIP value elapses.
This counter decreases as long as the channel is in Over Current condition and stops
when one of the above conditions is met or the trip value is elapsed.
The TRIP parameter can be programmed either via Local or Remote Control.
4.4.14
POWER
(PW)
It is the On/Off Status of the channel.
If the INTERLOCK is not active and the channels are enabled (see LOCAL/REMOTE
Enable), the channel is turned On by setting this parameter ON.
