SM 1690
page 8 of 18
File: SM1690_r5eng - Dec. 2013 - Technical note: SM1690
SM 1690
SM 1280
SM 1690
File: SM1690_r5eng - Dec. 2013 - Technical note: SM1690
page 9 of 18
XIII) The external circuit breaker must be marked as the
disconnecting device for the SM1690x.
XIV) The connector #1 must never be used as a switch-off
device.
Failure to comply with these instructions may involve
considerable risks for the staff responsible for checking and
using the equipment, as well as the risk of general malfunc-
tions of the equipment itself.
Equipment operation
Power-up procedure
Before powering-up the equipment, double check to have pro-
perly connected it, (look at the chapter “Wiring Instruction”)
then power on the unit through your external contactor.
Once switched OFF wait at least five seconds before setting it
ON again. The OFF state, between two consecutive ON state,
must last five seconds minimum.
With psu having network capability, like CANOpen (p/n
ending xxxCAN) or Modbus/TCP (p/n .....MTCP) or Profibus
(p/n......PROF) it’s mandatory to provide the physical signals
of “Power Enable” and “Interlock” (see the schematic of the
signals connector on next pages) otherwise the unit will not
respond to any bus command.
For protocol explanation refer to relevant Application Note.
The working status for these versions is the same of other
version (read the chapter “Working Modes”): the status is then
provided through messages sent on the bus.
At power on the unit enters into a “BOOTLOADER” state for
few seconds to allow firmware upgrade, then it goes imme-
diately into “STAND-BY” and here waits until the “filament
heating” is completed. If the unit is remotely driven, it is
necessary to remove the default Hibernate command, that
prevents the hardware from heating the filament.
If any alarm is present, the units stops, and the filament is off.
At the end of the heating cycle the unit enters in “READY”
mode: the power supply may power the magnetron, which
generates microwave, only when it will receive the enabling
command.
Any type of alarm forces the unit to exit from thr “READY”
state and enters it in “ALARM” state.
In absence of alarms the power supply may be left in “Ready”
continuously: when it receives the enabling command (ON) it
enters into “RF-ON” state and generates output power, when
the enabling command is removed (OFF) the unit comes back
to “READY” state.
Working Modes
The behaviour of the SM1690x depends on its “working
status”: it has several statuses with different meaning and
functionality. The logic flow of these statuses is showed on the
previous drawing. These statuses are:
BOOTLOADER
:
it goes in this mode at power-on, waits for any
serial firmware update data, and after a few seconds, the unit
enters in Stand-By mode.
STAND
-
BY
:
it’s a waiting state, the unit is powered but not ready
as the magnetron filament is not powered; all the working
parameters can be setted from Operator Panel; the unit enters
in Stand-By from the previous Bootloader state or when an
alarm, or hibernate condition is true.
The unit exits from Stand-by and goes to Preheating only
if there aren’t alarms, the Interlock chain is closed and the
HIBERNATE command is OFF.
PREHEATING
:
it’s a temporary state, driven by a timer, to allow
the filament to be heated. The unit enters in this mode after a
remote command or automatically after the end of Bootloader
state. When the timer is elapsed the unit goes in Ready mode.
READY
:
it’s a waiting state. The unit waits the enabling com-
mand to generate power to the magnetron. The magnetron
filament has been, and is properly heated.
The unit may last in this state as long as needed: it exits auto-
matically in case of alarm or when the ”Hibernate” command
is asserted. It goes to next “MW-ON” status when the enabling
command is set ON.
STANDBY
PREH
RUN
READY
HIBERNATE=0 &
INTERLOCK=1 &
ALARM=0
HIBERNATE=1 or
INTERLOCK=0 or
ALARM=1
HIBERNATE=0 &
INTERLOCK=1 &
ALARM,=0 &
TIME<15s
HIBERNATE=1 or
INTERLOCK=0 or
ALARM=1
HIBERNATE=0 &
INTERLOCK=1 &
ALARM,=0 &
TIME>15s
HIBERNATE=0 &
INTERLOCK=1 &
ALARM,=0 &
ENABLE=1
HIBERNATE=0 &
INTERLOCK=1 &
ALARM,=0 &
TIME>15s &
ENABLE=0
HIBERNATE=0 &
INTERLOCK=1 &
ALARM,=0 &
ENABLE=0
HIBERNATE=1 or
INTERLOCK=0 or
ALARM=1
HIBERNATE=0 &
INTERLOCK=1 &
ALARM,=0 &
ENABLE=1
BOOT
LOADER
TIME>2S
