Micron Technical Reference V9 Volume 1 - 第124页
POWER SUPPLY M37 M37 POWER SUPPLY ENCLOSURE 5.10 Technical Reference Manual Chapter Issue 13, Jan 17 Figure 5-8 Machine Safety Circuit 2 Handed Safety Relay PIHZ X1 RL2 A1 A2 23 24 13 14 S13 S14 S23 S24 N/C N/C Control C…
POWER SUPPLY M37
M37 POWER SUPPLY ENCLOSURE
Chapter Issue 13, Jan 17 Technical Reference Manual 5.9
Safety System
Components
The safety circuit comprises the following:
• The E Stop Relay
• The Two-Handed Relay
• System Switch
• Front Cover Interlock Switch
• Rear Cover Interlock/Interlock Blanking Plug
• E Stop Loop Circuit
• E Stop Blanking Plug
• Jog Buttons
Figure 5-7 Simplified Safety Circuit
CON 1 CON 2 CON 3 Sys. Switch
AUX AUX AUX
E Stop
Relay
0V
E Stop Loop and
E Stop Blanking Plug
E Stop Loop Supply
(Software E Stop)
Contactors
1, 2 & 3
Supplies 24V SW and 42V dc or 48V dc to the motors
Front Cover Interlock
CB1
3.15A
24V US
2 Handed
Relay
0V
Contactors
1 & 3
Jog
Buttons
Supplies 24V SW to the motors
Rear Cover Interlock/
Interlock Blanking Plug
POWER SUPPLY M37
M37 POWER SUPPLY ENCLOSURE
5.10 Technical Reference Manual Chapter Issue 13, Jan 17
Figure 5-8 Machine Safety Circuit
2 Handed
Safety Relay
PIHZ X1
RL2
A1
A2
23
24
13
14
S13
S14
S23
S24
N/C
N/C
Control
Circuit
Y1 Y2
E Stop Relay
PNOZ X2
RL1
Reset
Control
S33
S34
A1
A2
13
14
23
24
S11
S12
S21
S22
44
45
46
47
48
49
49
50
51
CB32
10A
42V dc or
48V dc
From PSU
M37 Power Su
pply Crate
M37TB01
Power Distri
bution PCB
CB 6
1.5A
CB 1
3.15A
Part
CON3
Part
CON2
Part
CON1
27
28
25
26
33
34
35
17
0V
15
24V US From PSU
36
37
38
40
39
41
42
43
M37PL23
M37PL22
1
2
24V SW
42V dc or 48V dc Servo Motor Supply
14PL08
E
System
M37PL27
1
2
System Lamp
3
4
5
6
7
8
9
10
11
12
E
Jog Left
E
Jog Right
1
2
3
4
5
6
7
8
9
10
11
12
M37PL25
1
2
5
3
E Stop
8ES2
M37PL24
1
2
5
3
E Stop Blanking Plug
3
4
Front
Cover
Interlock
System Power On
5
8
M37SK26
0V
M36 Machine Controller
7
E Stop Supply
Jog Left
2
3
Jog Right
6
Cover Interlock
Rear Cover Interlock/
Interlock Blanking Plug
1
2
3
4
8PL146
Metal Covers Machines Only
1
2
3
4
Q1
R1
0V
R2
CON 3
1
A1
A2
2
3
5
4
6
CON 2
1
A1
A2
2
3
5
4
6
CON 1
1
A1
A2
2
3
5
4
6
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.