Structure Of Power Supply Unit (Xl Board Specifications) - JUKI KE-3010 Maintenance Manual

14-2-2.

Structure of Power Supply Unit (XL Board Specifications)

The power supply unit is mounted on the front of the machine. Figure 14-2-2-2 show the structure
drawings of the power supply unit.
The power supply unit is composed of DC power supplies, control relays, and circuit protectors,
and designed to supply the AC and DC power to the units (control unit, X-Y unit, Z-θ unit,
transport unit, and head unit.)
The following shows the application of each DC power supply.
• +6V (+6.4V± 0.1V, PS1):
• +24VA (+24±0.1V, PS2):
• +24VB (+24±0.1V, PS3):
• +24VC (+24±0.1V, PS4):
• +24V (+24±0.1V, PS5,PS6): For controlling of electric feeder(ETF) (∗2)
14-2-2-1. Adjusting Method of DC Power Source Voltage Level
Table 14-2-2-1-1 DC Power Source Voltage Level Settings
No. Power
specifications
+48V
1 (∗1)
+6V
2
+24V
3
+24V
4
+12V
5
+24V
6 (∗2)
+24V
7 (∗2)
CN039
• The DC power output voltage is to be adjusted on the CN039 and MONI of the power supply unit.
• Pull out the power unit bracket, and adjust the output voltage variable change volume knob of
each DC power supply so that the output voltage values of the Nos. 2 to 7 DC power supply
are the specification values.
• No. 1 with an asterisk (∗1) is power supply lines not needing any adjustment.
∗1
No. 1 with an asterisk (∗) is a power supply not needing any adjustment.
∗2
The Table above shows when no machine Rev. is provided. For machine Rev. A or later,
only the PS5 is used and the part Nos. are also changed. For details, see section 14-2-2-3,
Block Diagram of the Power Supply Unit (XL board specifications, machine Rev. A or later).
Note
Note 1. Carefully adjust the variable resistor so that the voltage value does not become beyond
the specified adjustment level.
Note 2. Never use the GND line of a power supply unit other than that with the adjustment
instructed. (Do not connect such GND line.)
Note 3. PS4 is a DC power supply for the EN specifications mounted on the POWER UNIT (EN)
and is not mounted on the POWER UNIT.
Note 4. Before adjusting the voltage of the PS5 or PS6, disconnect the connectors of the electric
bank. (Adjust the voltage in the no-load status.)
Maintenance Guide
For controlling of mechanical feeder (stacking, 32mm-paper tape)
General-purpose (For control unit outer board, stepping driver, etc.)
For control of Zθ-servo amplifier
For driving of safety circuit (EN machine only)
Power Measurement terminals of power supply unit
symbol
CN 039 Pin No. 1 (+48V) and Pin No. 7 (+48V RTN)
－
PS 1
CN 039 Pin No. 3 (+6V) and Pin No. 9 (+6V RTN)
PS 2
CN 039 Pin No. 4 (+24VA) and Pin No. 10 (+24VA RTN)
PS 3
CN 039 Pin No. 5 (+24VB) and Pin No. 11 (+24VB RTN)
PS 4
CN 060 Pin No.6 (+12VC) and Pin No. 12 (+12V RTN)
PS5
MONI Pin No. 1 (+24VD) and Pin No. 3 (+24VD RTN)
PS6
MONI Pin No. 2 (+24VE) and Pin No. 4 (+24VE RTN)
MONI
Figure 14-2-2-1-1 Power Supply Unit
14-12
Rev. 2.0
Voltage
adjustment value
－
+6.4V±0.1V
+24V±0.1V
+24V±0.1V
+12V±0.1V
+26V±0.1V
+26V±0.1V
Power
supply unit