KIKUSUI PLZ-5W SR Series PLZ6005W SR Large-Capacity DC Electronic Load Smart Rack System User Guide

KIKUSUI PLZ-5W SR Series PLZ6005W SR Large-Capacity DC Electronic Load

Smart Rack System

Safety Precautions

• When using this product, be sure to observe the “Safety Precautions” in the Safety information manual. The following precautions pertain only to this product.• The rear panel may become hot during operation. If you touch it, you may burn yourself.
• Do not use the product where ventilation is poor. Heat is expelled from vents of the rear panel. To prevent the heat from building up and causing a fire, keep the vents at least 60 cm away from walls. Also, do not place objects within 60 cm of the rear panel.

Precautions Concerning Installation Location

• When installing this product, be sure to observe the “Pre-cautions Concerning Installation Location” in the Safety information manual. The following precautions pertain only to this product.

• When installing this product, be sure to observe the temperature and humidity ranges indicated below.
  Operating temperature range: 0 °C to 40 °C (32 °F to 104 °F) Operating humidity range: 20 % rh to 85 % rh (no condensation)

• When storing this product, be sure to observe the temperature and humidity ranges indicated below.
  Storage temperature range: -20 °C to 70 °C (-4 °F to 158 °F) Storage humidity range: 90 % rh or less (no condensation)

Fixing the product in place
This product has casters on its bottom side, so it is easy t o move the product. To ensure that the product is not move d accidentally while it is being operated, lock the casters, and fi x the product in place by lowering the stoppers to the floor.Stopper bolt’s bottom nut (M12)

1. Turn the nut clockwise to lower the stopper (lock).
2. Turn the nut counterclockwise to raise the stopper (unlock).

Component Names

Front panel (example of PLZ15005W SR)

No.| Name|

|
---|---|---|---
1| Master unit (PLZ1205W)| Connected in parallel with boosters.|

2

| Booster (PLZ2405WB)| Connected in parallel with a master unit and boosters.

PLZ6005W SR: 2 units, PLZ10005W SR: 4 units, PLZ15005W SR: 6 units, PLZ20005W SR: 8 units

|

3| Front-panel load input terminal cover| Not used. Do not remove the cover.|
4| Display| Displays the settings, measured values, and other information.|
5| Handle| Handle for moving the product on its casters.|
6| POWER switch| Press the side to switch the power on, and the  side to switch the power off.|
7| Model| Indicates the model.|
8| Casters| Four locations on the bottom side.|
9| Caster locks| Lock casters.|
10| Stopper bolt| For fixing bottom panel.|

Rear panel (example of PLZ15005W SR)

After making the connections, be sure to close the cover.
2| Serial number| PLZ-5W SR serial number. Indicated on the top side of the load input terminal cover.
3| EXT SYNC connector| Connector for synchronized operation.
4| EXT CONT connector| External control connector.

5

| DC OUT 5V connector| Used with the optional GPIB converter (PIA5100). For details, see the GPIB con- verter manual contained in the included CD-ROM.
6| DC INPUT terminal (load input terminal)| Used to connect the EUT and the PLZ-5W SR.

7

| USB port LAN port RS232C port| Remote control connector. For details on remote control, see the Communication Interface Manual on the included CD-ROM.
8| SENSING connector| Remote sensing connector.
9| AC INPUT connector| Power inlet.

Preparation

Connecting the Power Cord

Risk of electric shock

• This product conforms to IEC Safety Class I (equipment that has a protective conductor terminal). Be sure to earth ground the product to prevent electric shock.
• The product is grounded through the power cord ground wire. Connect the protective conductor terminal to earth ground.
•  Use the included power cord to connect to the AC line. If the supplied power cord cannot be used because the rated voltage or the plug shape is incompatible, have a qualified engineer replace it with an appropriate power cord that is 3 m or less in length. If obtaining a power cord is difficult, contact your Kikusui agent or distributor.
• Do not use the supplied power cord with other instruments.
• The power cord with a plug can be used to disconnect the product from the AC power line in an emergency. Connect the plug to an easily accessible power outlet so that the plug can be removed from the outlet at any time.
• Secure adequate space around the power cord plug. Do not insert the power cord plug into an outlet that is difficult to access or place objects around the power cord plug that will make plugging and unplugging difficult.

This product conforms to IEC Overvoltage Category II (energy-consuming equipment that is supplied from a fixed installation)

• Turn the POWER switch off
•  Check that the AC power line meets the nominal input rating of the product. The product can receive a nominal line voltage in the range of 100 Vac to 240 Vac at 50 Hz or 60 Hz (frequency range: 47 Hz to 63 Hz)
• Connect the power cord to the AC INPUT inlet on the rear panel
• Connect the power cord plug to a properly grounded outlet.

Checking Whether the Power Is On or Off

Turning the power on

1. Check that the power cord is connected correctly.
2. Check that nothing is connected to the load input terminals (DC INPUT)
3. Turn the POWER switch on After the startup screen, the load value input screen appears.

If you notice strange sounds, unusual odors, fire, or smoke around or from inside the PLZ-5W SR, turn off the power switch ( ), or turn off the switchboard breaker.
By factory default, the panel settings immediately before the POWER switch is turned off are saved. If you turn the power on, the PLZ-5W SR starts in the same state as it was in the last time that it was turned off. (However, the load setting is always Load Off.) The panel setting state at startup can be changed.

When the product does not start properly

If the product does not start when the power is turned on, follow the appropriate remedy shown below. If following the remedy does not solve your problem, contact your Kikusui agent or distributor.

that the connection at the AC INPUT terminal is secure.
An alarm is occurring.| See “Alarm types and operation” and “Clearing an alarm” in the PLZ-5W Series User’s Manual, eliminate the root cause of the alarm, and then clear the alarm.

Turning the power off

Press the side of the POWER switch to turn the power off.

CAUTION

If you want to turn the POWER switch back on, wait at least 5 seconds after the fan stops. Repeatedly turning the POWER switch on and off at short intervals can cause damage to the inrush current limiter. Furthermore, this will shorten the service life of the POWER switch, fuse, and other components.

Operating the Load Input Terminal Cover

When you open the load input terminal cover, you can connect cables to the terminals and cables on the rear panel. After making the connections, be sure to close the cover. Adjusting the position of the lock plate provided with the load input terminal cover makes the opening narrower for safer use.

Opening the load input terminal cover

1. Turn the POWER switch off ( ).
2. Loosen the screws holding the load input terminal cover on the rear
3. Open the load input terminal cover.

Closing the load input terminal cover

Close the load input terminal cover.

1. Tighten the screws holding the load input terminal cover on the rear panel.
2. Fasten the covers correctly to prevent them from moving.

Adjusting the lock plate

You can adjust the opening according to the load cables and other various cables in use. Move the lock plate to adjust the position.
Example
When four flexible conductors and sensing cables are used Removed lock plates can be stored by attaching them to the side of the load input terminal cover.

Connecting the Load Cables

Using load cables, connect the EUT to the product through the load input terminals on the rear panel.
The load input terminals on the front panel are for using a standalone PLZ1205W in a simple manner. Do not use these terminals as this product uses parallel operation.

Selecting the load cables

Select load cables that are suitable for the current to be used. You can use the optional large-current load cables. For details on large-current load cables, see the large-current load cable manual in the included CD-ROM.

WARNING

Risk of fire. Use load cables whose capacity is adequate for the product’s rated input current. Risk of electric shock. Use load cables with a voltage rating that meets or exceeds the product’s isolation voltage (±500 Vdc).

CAUTION
Use load cables with a core diameter that is appropriate for the amount of current being used and with sturdy, flame-resistant insulation.

Current capacity of load cables

If the load cable resistance is large, a large voltage drop may occur when current flows through the cables. This may result in the load input terminal voltage being lower than the minimum operating voltage of this product. Refer to the table below, run multiple cables in parallel to provide adequate wiring for the current.
A cable’s temperature is determined by the resistive loss based on the current, the ambient temperature, and the cable’s external thermal resistance. The following table shows the cur-rent capacity of heat-resistant vinyl cables that have a maximum allowable temperature of 60 °C when one of the cables is separated and stretched out horizontally in air in an ambient temperature of 30 °C. The current must be reduced under certain conditions, such as when vinyl cables that have a low heat resistance are used, when the ambient temperature is 30 °C or greater, or when cables are bundled together and little heat is radiated.

Nominal cross-sec-

tional area [mm2]

| AWG (reference cross- sectional area; mm2)| Allowable current1 [A](Ta = 30 °C)| Kikusui-recom- mended current [A]
---|---|---|---
80| 3/0| (85.01)| 257| 200
100| 4/0| (107.2)| 298| –
125| –| –| 344| –
150| –| –| 395| 300
200| –| –| 469| 400
250| –| –| 556| –
325| –| –| 650| 600
400| –| –| 745| –
500| –| –| 842| –
600| –| –| 930| –
800| –| –| 1080| –
1000| –| –| 1260| –

Taking measures against noise

When connecting cables that have the same heat resistance, separating the cables as much as possible to increase heat radiation enables a greater amount of current to flow. However, running the + (positive) and – (negative) output load cables side by side or bundling them together is more effective against unwanted noise. The Kikusui recommended currents shown in Current capacity of load cables

Limitations of the remote sensing function

All wires have resistance. As the wire becomes longer or the current becomes larger, the voltage drop in the wire becomes greater. This results in a smaller voltage being applied at the load input terminal. The PLZ-5W SR has a sensing function that compensates for this voltage drop, which is the total potential difference between the load input terminals an d sensing terminals, by up to approximately 7 V. If the voltage drop exceeds this level, use wires that have a greater cross-sectional area.

Using load cables, connect the EUT to the product through the load input terminals on the rear panel.

Risk of electric shock

• Do not touch load input terminals when the output is turned on.
•  The load input terminals on the front panel are connected internally to the load input terminals on the rear panel.
• The voltage applied to the terminal on one side is transmitted directly to the terminal on the other side.

Risk of burns

Load input terminals may become hot. Before you touch the load input terminals, turn the POWER switch off, and allow a sufficient amount of time for the terminals to cool off.

Risk of damage

• Do not connect the EUT to the load input terminals while the product’s load is turned on.

• Do not use the load input terminals on the front panel.
  Risk of overheating.

• Attach crimping terminals to the cables, and use the supplied screws to connect the cables.

• Open the load input terminal cover.

• Attach crimping terminals to the load cables. Attach crimping terminals that are appropriate for the bolts (M12) that are to be used

• Connect the load cables to the load input terminals.

• Use the supplied bolts, nuts, washers, and spring washers to secure the cables or wires in place.

• Tightening torque: 33.06 N·m

To connect sensing cables see Connecting the Sensing Cables

Adjust the positions of the lock plates for the load input terminal cover.Close the load input terminal cover.

Connecting the Sensing Cables

Using the remote sensing function makes it possible to change a voltage measurement point from a load input terminal to an arbitrary sensing point. By setting sensing points at the EU T end, influences such as voltage drops caused by the resistance of the load cables can be reduced, and the load current can be stabilized.
To use remote sensing, connect the sensing cables to the sensing terminals of the PLZ-5 W SR and the EUT end, and enable the remote sensing function.
Unlike the load cables, there is no need to consider the current capacity for the sensing cables. However, for adequate mechanical strength, use wires whose nominal cross sectional area is 0.5 mm2 or greater.

CAUTION

Risk of damage to the internal circuitry. Do not wire the sensing terminals while the POWER switch is turned on. If the remote sensing cables come loose while remote sensing is in use, the PLZ-5W SR and EUT may be damaged. Be sure to connect the cables securely. If you are not using remote sensing, remove the sensing cables, and be sure to attach the two short bars to the sensing terminals.

1. Open the load input terminal cover.
2. Connect the sensing cables.
3. Remove the two short bars from the sensing terminals, and then connect the cables.
4. Short bars must be connected to the sensing terminals when remote sensing is not in use. Store the short bars in a safe place.
5. Adjust the positions of the lock plates for the load input terminal cover close the load input terminal cover
6. Connect the sensing cables to the EUT Connect the cables as shown in the figure. Connect the cables as close to the EUT as possible.

Other Connections

Connection for Synchronized Operation

You can use the synchronization feature simply by connecting several PLZ-5W SRs or PLZ-5W series with LAN cables. For details on the synchronization feature
You can connect a mixture of various PLZ-5W SR and PLZ-5W series models (for example, PLZ15005W SR and PLZ1205W). Typical LAN cables (straight) up to 30 m long can be used. To use LAN cables more than 30 m long, please contact your Kikusui agent or distributor.

Risk of electric shock

Turn the POWER switches of all the PLZ-5W SRs and PLZ-5W series open the load input terminal cover .Connect a LAN cable to the OUT connector of EXT SYNC. Adjust the positions of the lock plates for the load input terminal cover close the load input terminal cover connect a LAN cable to the IN connector of EXT SYNC on another device that you want to synchronize with connect all PLZ-5W SR and PLZ-5W series units with LAN cables. Connection example (when connecting the PLZ15005W SR, PLZ205W, PLZ1205W) This completes the connections.

Connecting the External Control Device

By connecting the rear-panel EXT CONT connector, front-panel BNC connectors (I MON OUT connector, TRIG OUT connector) to an external device with signal cables you can control and monitor the PLZ-5W SR from the external device (external control). The BNC connectors are isolated from the chassis and load input terminals

External control connector kit

To connect the signal cable to the EXT CONT connector, use the included external control connector kit. For information about how to use this kit, see the TE Connectivity (formerly AMP) catalog. For information about how to obtain these tools or replacement parts, contact your Kikusui agent or distributor.

Connecting to the EXT CONT connector

1. Open the load input terminal cover
2. Connect the signal cable to the EXT CONT connector.
3. Adjust the positions of the lock plates for the load input terminal cover
4. Close the load input terminal cover.
5. Connect the signal cable to the external controller.

Connecting the Remote Control Device

1. In addition to using the front panel, you can also control the PLZ-5W SR remotely by sending commands. To use remote control, connect a cable to the interface connector on the rear panel.
2. For details on remote control and how to use it, see the Communication Interface Manual on the included CD-ROM
3. Open the load input terminal cover
4.  Connect a cable to the interface connector that you want to use.3 Adjust the positions of the lock plates for the load input terminal cover
5.  Close the load input terminal cover

References

• 修理サポート終了モデル表 – 菊水電子工業株式会社
• KIKUSUI Product Manufacturing Dates Decoder | KIKUSUI ELECTRONICS CORP.

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