Document type:
Title:
Revision date:
Revision:
User's Manual (MUT)
Mod. SY2527, Universal Multichannel Power Supply System
27/11/2000
0
NPO:
Filename:
Number of pages:
Page:
00103/97:2527y.MUTx/00
SY2527USERMANUAL_REV0.DOC
84
24
RESET signal
starts up
RESET
CPU RESET
BOARDS' RESET
100÷200 ms
900 ms
T
RCPU
T
RCH
time
Fig. 4.1 – RESET timing
•
If the RESET signal is longer than T
RCPU
=100÷200 ms (RESET LED red), only
the CPU is reset and the whole system resumes its operation from the
beginning. All the channels which are ON remain ON, all the channels which are
OFF remain OFF.
•
If the RESET signal is longer than T
RCH
= T
RCPU
+ 900 ms (RESET LED orange),
also the boards are reset and the channels which are ON are dropped to zero at
the maximum rate available and turned off.
After the RESET, the system will react so as to at Power-On: if the Power-On option
(refer to § 4.4.15, p.32) is enabled, each channel will be restored in the same condition it
was before the RESET at the correct rate. If it is disabled, all the channels will be off,
independently from the condition in which they were before the RESET.
N.B.: please note that any type of reset command must be enabled via software in
the RESET FLAG window by tagging the relevant reset condition with an asterisk
(for details see § 7.1.22).
The occurrence of a RESET is also signalled by the RST FLAG output signal, according
to the user’s settings in the
Set-up
à
à
Reset Flag
menu (refer to § 4.3.5, p.26 and to
§ 7.1.22, p.66).
4.2.8
INTERLOCK command
The INTERLOCK command allows to switch off simultaneously all the channels,
similarly to the KILL command (see § 4.2.6, p.23).
The INTERLOCK command can be activated via the
INTERLOCK input
which acts as
an open/closed contact. The selection of the contact position (open or closed) which will
cause the INTERLOCK command is performed via the two-position
INTERLOCK
switch
:
•
Upper position (OPEN)
: the channels are switched off as the INTERLOCK
contact is open (the ground connection in the INTERLOCK input is removed);
•
Lower position (CLOSED)
: the channels are switched off as the INTERLOCK
contact is closed (the INTERLOCK input is grounded).
The INTERLOCK condition of the system is signalled by the INTERLOCK red LED
alight.
