AMETEK SORENSEN DLM 10-60 (01) PDF Document

The safety symbols on the AMETEK SORENSEN DLM 10-60 are as follows:

WARNING, Risk of Electrical Shock: Indicates a potential for electrical shock.

CAUTION, Refer to Accompanying Documents: Indicates that you should consult the manual for important information.

Off (Supply): Indicates the power supply is off.

Standby (Supply): Indicates the power supply is in standby mode.

On (Supply): Indicates the power supply is on.

Protective Conductor Terminal: The terminal for the protective earth ground.

Fuse: Indicates the location of a fuse.

Direct Current (DC): Symbol for direct current.

Alternating Current (AC): Symbol for alternating current.

Three-Phase Alternating Current: Symbol for three-phase AC.

Earth (Ground) Terminal: Indicates an earth ground connection point.

Chassis Ground: Indicates a connection to the chassis ground.

The AMETEK SORENSEN DLM 10-60 has the following features:

• High power density, 600W, in a 1U half-rack size

• Appropriate for rack or benchtop applications

• Fast dynamic response: 500µs, maximum for 50% load steps

• Low ripple and noise: as low as 3.5 mV(RMS) and 35 mV(PK-PK)

• Universal auto-ranging AC input: 90-132V or 180-264V, without user setup

• Master/slave paralleling with simple unit-to-unit control interface cable

• Flexible rack mounting allowing units to be stacked in 1U increments without requiring clearance gaps between units or slides

• Side-by-side mounting of two units in a 19″ rack

• Fast response to programming changes with active downprogrammer

• Constant-voltage and constant-current modes of operation with automatic crossover and mode indicators

• Two 3.5 digit displays for output voltage, current, and OVP

• High resolution front panel controls for voltage and current (10-turn potentiometers), and OVP (20-turn trimmer potentiometer)

• Preview switches for output voltage, current, and OVP to set parameters without disrupting load connections

• Front panel OUTPUT switch for on/off control of output power

• Remote sensing to compensate for voltage drop of power leads

• User selectable ranges of 0-5 VDC and 0-10 VDC for programming and monitoring of output voltage and current, and for programming OVP

• SETUP switch for selecting ranges for programming and monitoring signals

• Opto-isolated remote shutdown for control of output power

• Front panel LOCAL/REMOTE switch for selecting programming source

• LOCAL-LOCKOUT function to disable front panel control while in remote operation

• Digital I/O for remote control and status annunciation

• Configuration changes without requiring removal of covers

• Optional GPIB, LXI™ Class C Ethernet Interface, RS-232, and isolated remote analog control

• Cooling fan speed control for low noise and extended fan life

The following table outlines the product matrix for the AMETEK SORENSEN DLM 600W series, which includes the DLM 10-60 model:

When you first receive your AMETEK SORENSEN DLM 10-60, you should perform an initial inspection to ensure no shipping damage has occurred.

1. Perform a visual inspection of the shipping container before accepting the package from the carrier. If damage is evident, note it on the carrier’s receipt and have the driver sign it.

2. After removing the unit from the container, check for shipping damage such as dents, scratches, enclosure distortion, or damaged controls. If external damage is evident, there may be internal damage as well.

3. If damage is found, immediately contact the carrier to file a claim for concealed damage. Save the shipping container and filler material for inspection.

The AMETEK SORENSEN DLM 10-60 is designed for both rackmount and benchtop applications. Since the unit is fan-cooled, it requires adequate clearance at the air intake and exhaust so that airflow is not impeded. The air intake is at the front and front sides, while the air exhaust is at the rear panel and rear sides. The temperature of the ambient air at the air intake should not exceed 50°C.

To install a single AMETEK SORENSEN DLM 10-60 in a rack using the optional DLMRK Rack Mount Kit, follow these steps:

1. Remove the four (4) rubber feet and mounting hardware from the bottom of the unit and discard them.

2. Remove the four (4) truss head screws (two on each side) from the front side panels of the unit. Do not discard these screws.

3. The unit can be mounted on the right or left side of the rack.

4. Install a Rack Mount Extruded Ear on the front side of the unit using two (2) of the existing truss head screws you removed earlier.

5. Install the Single-Unit Rack Mount Bracket on the opposite side from the Extruded Ear using the two (2) panhead SEMS screws (6-32UNC-2A x .25″) supplied in the kit.

6. Install the other Rack Mount Extruded Ear on the end of the Single-Unit Rack Mount Bracket using the other two (2) existing truss head screws.

7. Position one of the two Chassis Rack Mount Brackets on the chassis side of the rack. If needed, use one of the two (2) Right Angle Adapter Brackets to match existing vertical rack rail positions.

CAUTION: To prevent internal damage, use only the specified screw lengths. The unit will not stay on the Chassis Rack Mount Bracket until at least one of the four (4) front panel mounting screws is installed.

To install two AMETEK SORENSEN DLM 10-60 units in a rack using the optional DLMRK Rack Mount Kit, follow this procedure:

1. On both units, remove the four (4) rubber feet and mounting hardware from the bottom and discard them.

2. On both units, remove the four (4) truss head screws (two on each side) from the front side panels. Do not discard these screws.

3. Install the Tie Bar onto the bottom of the two (2) inner heat sinks using the six (6) Philips flat head screws (6-32UNC-2A X .31″) supplied in the kit.

4. Install the Rack Mount Extruded Ears on the front outer sides of both units using the existing four (4) truss head screws.

5. Position the two Chassis Rack Mount Brackets in the rack. If required, use the two (2) Right Angle Adapter Brackets to match existing vertical rack rail positions.

CAUTION: To prevent internal damage, use only the specified screw lengths.

The AMETEK SORENSEN DLM 10-60 will operate from an AC power source rated at 90-132 VAC and 180-264 VAC, at 47-63 Hz. The AC input voltage range is automatically selected by the unit at power-up, so no user setup is required. Exceeding the maximum rated AC input voltage could result in damage to the unit. The unit is supplied with a power cord with a safety ground wire that connects the enclosure to the safety ground of the AC power source.

To perform a Power-On Check of the AMETEK SORENSEN DLM 10-60, follow these steps:

1. Ensure that the POWER and OUTPUT switches are in the OFF position (switch buttons out).

2. Ensure that there are no connections to the REMOTE ANALOG INTERFACE connector, and that all positions of the SETUP switch are OFF (switches down).

3. Turn the controls for VOLTAGE and CURRENT fully counter-clockwise.

4. Turn the control for OVP fully clockwise.

5. Connect the power cord to an AC power source.

6. Turn the front panel POWER switch to the ON position (switch button in). The power supply will execute a power-up routine for approximately 7 seconds: all LED indicators will be on; all display LED segments will be on; the internal fans will run at maximum speed; the OVP and FAULT monitors will be reset.

7. After power-up, ensure that both front panel digital displays are on and indicate zero. The OVP, FAULT, EXT-OFF, REM, and OUTPUT LED indicators should be off.

8. Turn the OUTPUT switch ON.

9. Turn the control for the CURRENT fully clockwise.

10. Ensure that the VOLTAGE indicator is on and that the CURRENT indicator is off.

Follow these steps to check the Constant-Voltage Mode operation:

1. Ensure the front panel POWER and OUTPUT switches are in the OFF position (buttons out).

2. Connect a digital voltmeter (DVM) to measure the voltage at the output terminals.

3. Turn the VOLTAGE control on the front panel fully counter-clockwise.

4. Turn the CURRENT control on the front panel fully clockwise.

5. Turn the front panel POWER and OUTPUT switches to the ON position (buttons in).

6. Slowly turn the VOLTAGE control clockwise and observe the values of the VOLTAGE display and the DVM. Adjust the control for the VOLTAGE across its full range.

7. Compare the DVM reading with the front panel display reading to verify the display’s accuracy.

8. Ensure the VOLTAGE control adjusts the output voltage across the full rated range. Also, the VOLTAGE indicator should be on and the CURRENT indicator should be off.

Follow these steps to check the Constant-Current Mode operation:

1. Ensure the front panel POWER and OUTPUT switches are in the OFF position (buttons out).

2. Connect a DC shunt across the output terminals. Ensure the shunt and connecting wire ratings exceed the output current capability of the power supply.

3. Connect a digital voltmeter (DVM) across the DC shunt.

4. Turn the CURRENT control on the front panel fully counter-clockwise.

5. Turn the VOLTAGE control on the front panel fully clockwise.

6. Turn the front panel POWER and OUTPUT switches to the ON position (buttons in).

7. Slowly turn the CURRENT control clockwise and observe the values of the CURRENT display and the DVM. Adjust the control for the CURRENT across its full range.

8. Compare the DVM reading with the front panel display reading to verify accuracy. The DVM reading must be converted to current by multiplying it by a conversion factor (shunt’s DC current rating divided by its burden voltage rating).

9. Ensure the CURRENT control adjusts the output current across the full rated range. The CURRENT indicator should be on and the VOLTAGE indicator should be off.

To set the AMETEK SORENSEN DLM 10-60 for constant-voltage mode of operation, follow these steps:

1. Turn the front panel POWER switch to the ON position and the OUTPUT switch to the OFF position.

2. Press in the V/I PREVIEW switch to display the programmed setting of the output voltage and current. Set the displayed values to the desired output voltage and an output current that would exceed the load current. The current setting must be greater than the maximum peak current required by the load.

3. Turn the front panel OUTPUT switch to the ON position. The VOLTAGE indicator should be ON and the CURRENT indicator should be OFF.

To set the AMETEK SORENSEN DLM 10-60 for constant-current mode of operation, follow these steps:

1. Turn the front panel POWER switch to the ON position and the OUTPUT switch to the OFF position.

2. Press in the V/I PREVIEW switch to display the programmed setting of the output voltage and current. Set the displayed values to the desired output current and an output voltage that would exceed the maximum compliance voltage required by the load. The voltage setting must be greater than the maximum peak voltage required by the load.

3. Turn the front panel OUTPUT switch to the ON position. The CURRENT indicator should be ON and the VOLTAGE indicator should be OFF.

Use the following procedure to set the OVP threshold on your AMETEK SORENSEN DLM 10-60:

1. Turn the front panel POWER switch to the ON position and the OUTPUT switch to the OFF position.

2. Press in the V/I PREVIEW switch to display the programmed setting of the output voltage and current. Set the displayed values to the desired output voltage and current.

3. Press in the OVP PREVIEW switch to display the programmed setting of the OVP threshold. Ensure that the OVP setting exceeds the setting of the output voltage; otherwise, the OVP will be tripped as soon as the POWER switch is turned ON.

4. To verify OVP operation: set the OVP threshold to less than the full scale output voltage rating of the power supply; set the output voltage to less than the OVP threshold; turn POWER switch ON; adjust output voltage so that the OVP threshold is exceeded. The output will shut down and the OVP indicator will turn on when the threshold is reached.

To reset the OVP monitor on the AMETEK SORENSEN DLM 10-60 if it has been activated, perform the following:

1. Reduce the power supply’s output voltage to below the OVP threshold.

2. Ensure that the connections for the power and sense leads are correct.

3. The OVP monitor is reset by toggling OFF and then back ON either of the following: the OUTPUT switch, the POWER switch, or the EXTERNAL-OFF signal of the REMOTE ANALOG INTERFACE.

When using the AMETEK SORENSEN DLM 10-60 to charge a battery, the following precautions should be taken:

1. Connect an isolation diode in series with one of the output terminals of the power supply. This diode will prevent discharge of the battery if the power supply is turned off. The diode must have suitable current and voltage ratings and should be mounted on an appropriate heat sink.

2. Adjust the VOLTAGE setting to the desired float voltage using the V/I PREVIEW switch or with the power supply disconnected from the battery. The VOLTAGE setting should compensate for the voltage drop of the isolation diode if local sensing is used.

3. Adjust the CURRENT setting to the desired current limit value when charging a battery.

When recharging, the power supply will initially operate in constant-current mode. As the battery charges, its voltage increases until the float voltage setting is reached. Then, the power supply enters constant-voltage mode, regulating the output voltage at the float setting. The battery current decreases from the set value and eventually drops to a low float current level when the battery is fully charged.

The SETUP switch on the AMETEK SORENSEN DLM 10-60 allows you to configure the power supply for user requirements. The factory default is all positions OFF (down). The functions are detailed in the table below:

Up to four AMETEK SORENSEN DLM 10-60 units of the same model can be connected in parallel. Setup for the parallel configuration is as follows:

1. Connect the outputs of the units in parallel at the rear panel output terminals using short cable lengths. Connect the load wires to the output terminals of the master unit.

2. Interconnect the master and slave units with the PARALLELING CABLE (Sorensen part number DLMP1). Either of the two rear panel PARALLEL I/O connectors can be used.

3. For the slave units, select slave mode by turning ON the SLAVE position (Position-2) of the SETUP switch. The master unit must have the SLAVE position set to OFF.

4. Adjust the OVP setting of the slave unit to full scale.

5. The voltage, current, and OVP are adjusted with the controls of the master unit. The voltage display of the slave units will be blanked out. The current displays of all units must be summed to derive the total load current.

6. The OUTPUT switch of the master unit will turn off all units. The OUTPUT switch of a slave unit will turn off only its output.

7. Turning off the POWER switch of any unit will result in the shutdown of all units.

8. A shutdown in any unit (from a fault, OVP, overtemperature, or loss of AC power) will result in the shutdown of all units.

9. External control through the REMOTE-ANALOG INTERFACE and interface selections with the SETUP switch are done with the master unit.

Multiple AMETEK SORENSEN DLM 10-60 units of the same model can be connected in series to obtain a higher output voltage, within the limits of the 300V(PK) maximum float potential. The supplies are interconnected with the negative terminal of one supply being connected to the positive terminal of the other.

The total output voltage is derived from the positive and negative terminals of the total string and is the sum of the individual outputs. Each supply is individually adjusted. The output current is the same for each unit. Either local or remote sensing can be used.

CAUTION: To prevent damage to a supply, do not connect the remote sense leads of one supply across the total series string.

Because the AMETEK SORENSEN DLM 10-60 uses forced convection cooling, dust can be pulled into the unit. In dusty environments, periodic cleaning may be required. The exterior of the unit should be cleaned with a mild solution of detergent and water. The solution should be applied onto a soft cloth, not directly to the surface of the unit. To prevent damage to materials, do not use aromatic hydrocarbons or chlorinated solvents for cleaning.

If your AMETEK SORENSEN DLM 10-60 appears to be operating improperly, use this troubleshooting guide to diagnose the problem.

WARNING: Calibration procedures are performed with the power supply top cover removed and the power on. Potentially lethal voltages exist. Use insulated tools and do not touch any components or circuits.

Allow the unit to warm up for 30 minutes at no load before performing calibration. The following procedures should be followed:

Internal Reference Adjustment:

1. Connect a voltmeter from J14-4 (positive lead) to J14-6 (negative lead).

2. Adjust potentiometer R379 for a voltmeter reading of -5.000 VDC.

Output Voltage Offset Adjustment:

1. Connect a voltmeter across the output terminals.

2. Connect a jumper from Pin-1 to Pin-6 of the REMOTE ANALOG INTERFACE connector to enable remote control.

3. Connect jumpers from Pin-15 to Pin-10 and Pin-3 of the REMOTE ANALOG INTERFACE connector to program the output current and OVP to full scale.

4. Connect a voltage source, set to 0.050 VDC, from Pin-9 to Pin-12 of the REMOTE ANALOG INTERFACE connector.

5. Adjust potentiometer R377 on the Main PWA for a reading on the external voltmeter of 1% of full scale output voltage.

6. Iterate the output voltage offset and range adjustment until both are accurate.

Output Voltage Range Adjustment:

1. Connect a voltmeter across the output terminals.

2. Connect a jumper from Pin-1 to Pin-6 of the REMOTE ANALOG INTERFACE connector to enable remote control.

3. Connect jumpers from Pin-15 to Pin-10 and Pin-3 of the REMOTE ANALOG INTERFACE connector to program the output current and OVP to full scale.

4. Connect a voltage source, set to 5.00 VDC, from Pin-9 to Pin-12 of the REMOTE ANALOG INTERFACE connector.

5. Adjust potentiometer R378 on the Main PWA for a reading on the external voltmeter of 100% of full scale output voltage.

6. Iterate the output voltage offset and range adjustment until both are accurate.

Output Current Offset Adjustment:

1. Connect a DC shunt across the output terminals.

2. Jumper Pin-1 to Pin-6 of the REMOTE ANALOG INTERFACE connector.

3. Jumper Pin-15 to Pin-9 and Pin-3 of the REMOTE ANALOG INTERFACE connector.

4. Connect a 0.050 VDC source from Pin-10 to Pin-12 of the REMOTE ANALOG INTERFACE connector.

5. Adjust potentiometer R375 on the Main PWA for a current through the external shunt of 1% of full scale output current.

6. Iterate the output current and offset adjustments until both are accurate.

Output Current Range Adjustment:

1. Connect a DC shunt across the output terminals.

2. Jumper Pin-1 to Pin-6 of the REMOTE ANALOG INTERFACE connector.

3. Jumper Pin-15 to Pin-9 and Pin-3 of the REMOTE ANALOG INTERFACE connector.

4. Connect a 5.00 VDC source from Pin-10 to Pin-12 of the REMOTE ANALOG INTERFACE connector.

5. Adjust potentiometer R376 on the Main PWA for a current through the external shunt of 100% of full scale output current.

6. Iterate the output current and offset adjustments until both are accurate.

Voltage Display Adjustment:

1. Connect a voltmeter across the output terminals.

2. Adjust the front panel CURRENT and OVP controls to fully clockwise.

3. Turn the OUTPUT switch on.

4. Adjust the front panel VOLTAGE control for an output voltage equal to 100% of full scale.

5. Adjust potentiometer R13 on the Display PWA for a VOLTAGE display of 100% of full scale.

Current Display Adjustment:

1. Connect a DC shunt across the output terminals.

2. Adjust the front panel VOLTAGE and OVP controls to fully clockwise.

3. Turn the OUTPUT switch on.

4. Adjust the front panel CURRENT control for an output current equal to 100% of full scale.

5. Adjust potentiometer R15 on the Display PWA for a CURRENT display of 100% of full scale.