Micron Technical Reference V9 Volume 1 - 第126页
POWER SUPPLY M37 M37 POWER SUPPLY ENCLOSURE 5.12 Technical Reference Manual Chapter Issue 13, Jan 17 By pressing and releasing the system sw itch, the relay control circuit enables the activation of the 24V switching con…
POWER SUPPLY M37
M37 POWER SUPPLY ENCLOSURE
Chapter Issue 13, Jan 17 Technical Reference Manual 5.11
E Stop Loop
WARNING
E STOP CIRCUIT. THE E STOP CIRCUIT FITTED TO THE MACHINE ONLY
ISOLATES THE 24V AND 42V SUPPLIES TO THE MAIN CONTACTORS. LETHAL
VOLTAGES ARE STILL PRESENT WITHIN THE MACHINE AFTER THE E STOP
HAS BEEN ACTIVATED.
The emergency stop loop consists of a series circuit connecting the E Stop
blanking plug, the E Stop button, the front cover interlock and the rear cover
interlock/interlock blanking plug. The E Stop loop supply (software E Stop) from
the NextMove interface card passes through the E Stop loop to the solenoid of
the E Stop relay. Once energised the E Stop relay feeds 24V US from the PSU
to the solenoids of contactors Con 1, Con 2 and Con 3. Once energised
contactor Con 1 feeds 24V SW via contactor Con 3 to provide stepper motor
drive. Contactor Con 2 feeds +42V dc or +48V dc via contactor Con 3 to provide
servo motor power.
If any component in the loop becomes open circuit or if the E Stop loop supply
drops to 0V, the E Stop relay PNOZ X2 de-energises. Contactors Con 1, Con 2
and Con 3 de-energise, this ensures the immediate shut down of all motors.
On E Stop activation, the machine monitor displays the Restore Power window.
The recovery method is to remove the E Stop condition and press the System
button.
The M37 power supply enclosure has been designed to be machine generic,
because of this, blanking plugs are fitted where interlocks are not required.
Two-Handed Relay With the front printhead cover open the machine sees this as an E Stop
condition and motor power is not available. The two-handed relay enables
functions such as priming paper and priming solvent to be carried out with the
front printhead cover open. The operator selects the required function on the
MMI prior to opening the front printhead cover. Once selected both jog buttons
are used to perform the task.
Provided the two jog buttons are pressed within 0.5 seconds of each other, the
two-handed safety relay internal control circuit allows the safety relay contacts
to switch. Contactors Con 1 and Con 3 activate to enable the 24V SW supply.
As contactor Con 2 does not become energized, power is not available for servo
motor drive.
The 24V SW power is enabled whilst the jog buttons are held on. The software,
having being notified that a prime paper or prime solvent function has been
selected, provides drive to the relevant circuit.
System Switch Provided the E Stop loop is intact, the E Stop loop supply is at 24V and is
available at the E Stop relay solenoid. System power is controlled by the system
switch which is connected to the reset terminals of the E Stop relay control
circuit. Internal auxiliary contacts CON1, CON2 and CON3 are wired in series
with the system switches, this allows the E Stop relay to monitor the contactors
to ensure that they have not welded shut.
POWER SUPPLY M37
M37 POWER SUPPLY ENCLOSURE
5.12 Technical Reference Manual Chapter Issue 13, Jan 17
By pressing and releasing the system switch, the relay control circuit enables
the activation of the 24V switching contacts and power is available to contactors
Con 1, Con 2 and Con 3. Contactor Con 2, via contactor Con 3, enables system
power to be available and this is signalled to the control enclosure with the
switching on of Q1. With the 24V SW supply now available, the system lamp
comes on and stays on even though the system switch has been released.
Contactor Con 2, via contactor Con 3, also enables the 42V dc or 48V dc servo
motor supply.
PSU Monitor Board The board monitors the voltages at circuit breakers CB1 to CB31 on the power
distribution PCB and sends a data stream via the USB port M37SK30 to the
machine PC.
The voltages monitored and where used are as follows:
A separate application is used to display the voltage readings on the machine
monitor, to access this window carry out the following:
1. Switch ON and initialise the machine.
2. On the keyboard, press the Windows key to access the taskbar.
181507 ISSUE
Voltage Where Used
+24V US NextMove Interface, MIU, Camera Lighting, Stepper Logic, Machine Fans, I/O
Node Power, Grid-Lok Tooling, High Throughput Conveyor (HTC), Euroflex and
Servo Motor Logic.
+24V SW NextMove Interface, MIU, Belt Motors, I/O Node Power, Grid-Lok Tooling and
High Throughput Conveyor (HTC).
+5.5V NextMove ES, USB Hub
+12V I/O Node Power, Grid-Lok Tooling and High Throughput Conveyor (HTC).
-12V NextMove ES
+42V/+48V Servo Motor Supply
POWER SUPPLY M37
M37 POWER SUPPLY ENCLOSURE
Chapter Issue 13, Jan 17 Technical Reference Manual 5.13
3. On the taskbar, select Start, Programs, DEK Power Monitor. The following
window is displayed:
NOTE
Ensure that the Circuit Breaker radio button is checked in Backplane Type.
4. Clicking on the channel ID button, ie (CH01) 24V, opens a further informa-
tion window, an example of which is shown below: