Document type:
Title:
Revision date:
Revision:
Installation Guide (MUT)
Mod. SY1527, universal multichannel power supply system
03/12/02
3
NPO:
Filename:
Number of pages:
Page:
00103/97:1527x.MUTx/03 HWGUIDE_REV3.DOC
62
12
If the Board has fixed current hardware protections, the output current is permitted
to exceed the ISET value; the channel acts like a current generator only if the
maximum current value is reached.
2) TRIP = finite value (TRIP mode)
In this case, the channel behaves as in the constant CURRENT mode for a time
equal to the finite value set as TRIP parameter, and then it is switched off according
to the selected
Power-Down
option (Kill/Ramp-Down). If the
Kill
option is selected,
the channel will be switched off immediately. If the
Ramp-Down
option is selected,
the voltage will drop to zero at a rate determined by the value of the
Ramp-Down
parameter programmed for that channel.
Other front panel signals and relevant LEDs are foreseen to signal the channel status,
such as OVERVOLTAGE, UNDERVOLTAGE, CHANNEL ON and TRIP. Another set of
LEDs warn about possible fault conditions in the system operation (OVER
TEMPERATURE, FAN FAILURE, POWER FAILURE). For a detailed description of the
channel parameters please refer to the
User’s
Manual
. A description of all front panel
signals and LEDs can be found in Section 4.3, p.36 of this guide.
A RESET can be generated either manually via a front panel button or remotely by
sending a proper signal through the relevant connector. In both cases it is possible to
reset only the system’s CPU or both the CPU and the boards, depending on the duration
of the RESET signal.
The System may be instructed to react to a Power On or to a Restart bringing all the
channels from zero to the programmed value without the user's intervention via the
Power-On
parameter. If this option is enabled, the System will recover smoothly from a
power failure or RESET, automatically restoring the status it had before the power was
interrupted.
KILL and INTERLOCK functions have also been implemented and allow to drop the
channel output voltage to zero, independently from the Ramp-Down parameter set.
For a detailed description of all system control commands and monitoring signals please
refer to the
User’s
Manual
.
In order to protect the System from improper use, a multilevel management of the user’s
profiles has been foreseen, including the possibility of having password protection for
each channel or group of channels. In particular, three different login levels are available:
Guest
,
User
and
Administrator
, each with different levels of access ability to the system
parameter monitoring and setting. Moreover, the possibility of defining preferred custom
environments is foreseen for each single user.
Daisy-chain configuration of more SY1527 crates can be achieved by using the
H.S. CAENET connectors located on the front panel. The chain can be controlled
remotely by a SY1527 system configured as CAENET Controller allowing for
Multicrate
Operation
, i.e. the possibility of controlling and monitoring interactively the daisy-chained
crates one at a time, either from any one of the SY1527 chain’s crates or from a PC or
video terminal externally connected to any one of the crates. Moreover, in
Multicrate
Operation
it is possible to connect to the chain a SY127 system, equipped with a
A128HS board, and interact with it via H.S. CAENET. The same operation is also
possible with a SY527 system.
The Ethernet interface further extends the access facilities to the system: it allows the
use of a Browser or just a Telnet connection to monitor and control interactively each
crate connected to the network. This type of link, which can be reduced to the
Customer’s Intranet in order to have secure access, allows to perform remotely a wide
range of tasks, such as system debugging, firmware upgrading and even technical
