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Aim-TTi CPX400S Digital Bench/ System DC Power Supply - 420W, 1 Output

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51153-9000
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The Aim-TTi CPX400S Digital Bench/ System DC Power Supply is an ergonomic and easy-to-use flexible power supply optimised for conventional bench-top use in laboratories.

PowerFlex Design

This single-channel PSU has a total power output of 420W, a maximum voltage output of 60V, and a maximum current output of 20A. Its channel can operate in constant current or constant voltage mode with crossover and includes a mode indicator and over-voltage protection.

The PowerFlex design enables variable voltage and current combinations within the maximum power envelope and allows higher currents to be generated at lower voltages.

Additionally, the PowerFlex regulation system includes a high-frequency pre-regulator combined with a linear post regulator to provide the Aim-TTi CPX400S Digital Bench/ System DC Power Supply with a good transient response and low noise.

Ergonomic Design

As mentioned above, the Aim-TTi CPX400S Digital Bench/ System DC Power Supply is optimised for conventional benchtop use. To this end, it is compact in size; the Aim-TTi CPX400S Digital Bench/ System DC Power Supply is housed in a ¼ rack width 3U high case.

In addition to this, the Aim-TTi CPX400S Digital Bench/ System DC Power Supply includes safety binding posts capable of accepting normal plugs, bare wires and fork connections, as well as fixed-shroud 4mm plugs commonly found in laboratories. Furthermore, due to the binding post’s limited opening length and insulated shoulders, they are touch-proof to 250V.

Analogue Control with Digital Stability

Also adding to the practicality and ease-of-use of the Aim-TTi CPX400S Digital Bench/ System DC Power Supply is its analogue controls. Using the coarse and fine voltage controls and logarithmic current control (ideal for setting low-level currents accurately) the user can configure the required outputs.

To prevent the specified settings from drifting or from becoming accidentally altered, the user can press the S-Lock button to transfer control of the voltage and current settings to the internal digital circuitry. As a result, the Aim-TTi CPX400S Digital Bench/ System DC Power Supply is equipped with the ease and simplicity of analogue control and the precision and stability of digital control.

Settings can be viewed and altered as necessary by pressing the Aim-TTi CPX400S Digital Bench/ System DC Power Supply’s View Settings button.

Fixed Power Supply

In addition to functioning as a flexible PSU, the Aim-TTi CPX400S Digital Bench/ System DC Power Supply can serve as a fixed-output power supply at 60V/7A or 20V/20A. When engaged, the Fixed Power Supply mode ensures the unit remains in constant current or constant voltage mode despite the load. Additionally, while in this mode the resolution of the voltage and current controls is finer.

The Aim-TTi CPX400S Digital Bench/ System DC Power Supply’s current and voltage limits can be customised to accommodate the range required for the user’s application.

Precision Metering and Remote Sense

The Aim-TTi CPX400S Digital Bench/ System DC Power Supply’s voltage and current meter indicate readings via its 4-digit display. The display has a fixed resolution of 10mV/ 10mA to prevent misinterpretation of readings. The user is able to view accurate and consistent measurements at a glance.

Moreover, to ensure precise regulation at the load and true metering of the load voltage, the Aim-TTi CPX400S Digital Bench/ System DC Power Supply includes a remote sense terminal at the output. The Aim-TTi CPX400S Digital Bench/ System DC Power Supply’s remote sense terminal can be enabled and disabled as required.

The Aim-TTi CPX400S Digital Bench/ System DC Power Supply is a compact, flexible and easy-to-use PSU.

Aim-TTi CPX400S Digital Bench/ System DC Power Supply Key Features

  • Ergonomic, easy-to-use and flexible power supply optimised for conventional bench-top use in laboratories
  • Total power output: 420W
  • Maximum voltage output: 60V
  • Maximum current output: 20A
  • The output can operate in constant current or constant voltage mode with crossover
  • Mode indicator
  • Over-voltage protection
  • PowerFlex design enables variable voltage and current combinations within the maximum power envelope
  • Higher currents can be generated at lower voltages
  • PowerFlex system includes a high-frequency pre-regulator combined with a linear post regulator
  • The PowerFlex regulation system provides a good transient response and low noise
  • Compact: housed in a ¼ rack width 3U high case
  • Suitable for crowded laboratory benches
  • Safety binding posts can accommodate normal plugs, bare wires, fork connections and fixed-shroud 4mm plugs
  • Binding posts are touch-proof to 250V
  • Coarse and fine voltage control
  • Logarithmic current control for setting low current levels accurately
  • S-Lock transfers control of the voltage and current to the internal digital circuitry to prevent drift or accidental alteration
  • Combines the ease of analogue control with the precision of digital control
  • View Settings button: view and alter settings
  • Can be used as a fixed power supply at 60V/7A and 20V/20A
  • Fixed Power Supply mode ensures the unit remains in constant current or constant voltage mode despite the load
  • The resolution of the voltage and current controls is improved in Fixed Power Supply mode
  • Current and voltage limits can be customised 
  • 4-digit display
  • Fixed 10mV/ 10mA resolution
  • The fixed resolution prevents accidental misreading of results
  • View accurate and consistent readings at a glance
  • The remote sense terminal at the output ensures precise regulation at the load and true metering of the load voltage
  • Remote sense terminal can be enabled and disabled as required
  • A compact, flexible and easy-to-use PSU

What’s Included?

  • Aim-TTi CPX400S Digital Bench/ System DC Power Supply - 420W, 1 Output

Aim-TTi CPX400 Series Digital Bench/ System DC Power Supply Technical Specifications

 Output Specifications (each output)
Voltage/Current/Power Levels Voltage Range:0V to 60V
Current Range:0A to 20A
Power Range:Up to 420W subject to power envelope.
Note Actual maxima for voltage and current are typically 1% greater than the figures given above.
Power Envelope  The maximum current atany voltage settings is limited by the power envelope which is set to
give 7A at 60V rising to 20A at 20V under all ac supply conditions (both outputs loaded). At
lower output voltages the power is restricted by the 20 amps current maximum.
Output Setting and Control  Voltage Setting: By coarse and fine controls
Current Setting: By single logarithmic control
Output Mode:Constant voltage or constant current with automatic cross-over.
CC indicator lit in constant current mode
Output Switch:Electronic, non isolating. Preset voltage and current limit displayed
when Output is off. Output rise time no load <10ms.
View Settings: With the output On, the meters show actual voltage and current.
The preset levels can be viewed and adjusted at any time by pressing
the View Settings button
Status Indication:LED indication of Output On, V/I Limits, CV, CI, Power Limit, Remote,
LAN status. Message on meter display for trip condition.
S-Lock (Settings Lock) Voltage and current settings can be locked by a single button press.
Lock accuracy is equal to the meter accuracy (see Meter Specifications).
Output Performance Ripple & Noise:Typically <3mV rms, <15mV pk-pk, (5mV rms max.) in CV mode.

Load Regulation:

Voltage - <0·01% of maximum output for any load change within
the PowerFlex envelope (remote sense connected).

Current - <0·05% of maximum output for any load change within
the PowerFlex envelope

Line Regulation: 

Voltage - <0·01% of maximum output for a 10% line change.

Current - <0·01% of maximum output for a 10% line change.

Transient Response: <250µs to within 50mV of setting for a 5% to 95% load change.
Temp. Coefficient: Typically <100ppm/°C
Output Protection  Output Protection: Forward protection by Over-voltage Protection (OVP) trip.
Reverse protection by diode clamp for currents to 3A.
OVP Setting/Range: Via screwdriver adjustable preset on front panel. Range 1V to 66V
Over-temperature: Output trips off for over-temperature.
Safety Interlocks: Operations that could cause an unexpected change in voltage or
current settings are interlocked with the output switch.
Output Connections  Output Terminals:Universal 4mm safety binding posts on 19mm (0·75”) spacing at front.
Screw terminals at rear (CPX400SA, SP & DP only).
Terminals can accept fixed shroud 4mm plugs, standard 4mm plugs, fork terminals and bare wires.
Remote Sense Sense Selection: Voltage sensing is selected as Local or Remote by front panel switch.
Sense Terminals: Sprung loaded screw-less terminals at front.
Screw terminals at rear (CPX400SA, SP & DP only).
Meter Specifications (each output)
Display Type Dual 4-digit meters, 10mm (0·39”) LED
Voltage Meter Resolution/ Accuracy: 10mV / ± 0·1% of reading ± 2 digits
Current Meter Resolution/ Accuracy: 10mA / ± 0·3% of reading ± 20mA
Voltage Tracking (CPX400D & DP)
Independent Mode In the normal mode of operation, each output is fully independent and isolated. Operation is
equivalent to two single output power supplies.
Voltage Tracking Mode The two outputs remain isolated, but the Slave voltage controls are disabled and the Slave
voltage is set equal to the Master voltage. This can be used to generate tracking bipolar voltages, or tracking unipolar voltages relative to different grounds.
When voltages greater than 60V are required, the outputs can be wired in series to generate
0 to 120V with the voltage controlled from the Master.
When currents greater than 20A are required, the outputs can be wired in parallel to create
the equivalent of a 40A power supply with the voltage controlled from the Master.
Track Accuracy: Slave voltage = ± (0·1% of Master voltage setting + 10mV)
Both On/ Both Off (CP400D & DP) Each output has an independent DC On/Off control, however, an additional control button is
provided which turn both outputs on or off simultaneously.
Analogue Remote Interface (CPX400SA Only)
The CPX400SA offers galvanically isolated analogue remote control of voltage and current
from control voltages. Voltage and current front panel settings generate non-isolated analogue
output voltages that can be used to control slave power supplies.
Input Scaling 0 to 100% control of voltage or current from 0 to 5V or 0 to 10V
(selectable)
Input Accuracy Voltage: 0.3% ±20mV. Current: 0.5% ±50mA.
Input impedance 10KΩ
Output Scaling Set values of 0 to 100% of rated output voltage and current
generate 0 to 5V (not isolated)
Output Accuracy Voltage: 0.3% ±20mV. Current: 0.5% ±50mA.
Output impedance 125Ω
Remote On/Off Output On/Off can be controlled by external switch closure
(not isolated)
Digital Bus Interfaces (CPX400SP & CPX400DP)
The CPX400SP & CPX400DP offers full remote control and read-back using RS-232, USB, GPIB
or LAN (compliant with LXI class C). All interfaces are at ground potential and opto-isolated
from the output terminals. Note: Remote/Local Sense, is manually selectable only.
RS-232 Standard 9-pin D connector. Baud rate 9,600.
USB USB 2.0 connection (backwards compatible with USB 1.x). Operates as a virtual COM port.
GPIB (IEEE-488) The interface conforms with IEEE-488.1 and IEEE-488.2.
Ethernet (LAN) Standard 10/100 base-T hardware connection. ICMP and TCP/IP Protocol for connection to
Local Area Network or direct connection to a single PC.
LXI Compliance LAN interface is compliant with LXI class C. (LXI is the abbreviation for Lan eXtensions for
Instrumentation).
Digital Programming Performance (CPX400SP & DP only)
Voltage Setting Resolution/Accuracy: 1mV / ± (0.05% +10mV)
Current Setting Resolution/Accuracy: 1mA / ± (0.3% +5mA)
Programming Speed Command Delay: Typically <25ms (this must be added to any of the figures below)
Voltage Up Time: <10ms* to 1%
Voltage Down Time: <80ms* to 1% (full load); <1.5s* to 1% (no load)
* The up and down times vary with range and voltage step size.
General Specifications 
Input AC Input: 110 to 240 volts ±10% 50/60Hz. Installation Category II.
Input Power: Single - 625VA, Dual - 1250VA max.
Temperature & Environmental Operating Range: +5ºC to +40ºC, 20% to 80% RH
Storage Range: -40ºC to + 70ºC
Environmental: Indoor use at altitudes up to 2000m, Pollution Degree 2.
Cooling: Rear discharge variable speed fan.
Safety & EMC Safety: Complies with EN61010-1
EMC: Complies with EN61326
Physical

Size:

Single - 107 x 130 (¼ rack 3U) x 398mm

Dual - 210 x 130 mm (½ rack 3U) x 377mm
(size excludes feet, knobs and terminals).

Weight: Single - 4.25kg (9.35lb), Dual - 6.3kg (13.9lb)
Driver Software Supplied (CPX400SP & DP)  
IVI Driver An IVI driver for Windows is supplied. This provides support for common applications such as
LabView*, LabWindows*, HPVEE* etc.
USB Driver An installation file is supplied which calls a standard Windows* USB driver.
Notes  * LabView and LabWindows are trademarks of National Instruments.
HPVEE (now Agilent VEE) is a trademark of Agilent Technologies.
* USB interface is supported for Windows 2000 and above.
Windows is a trademark of Microsoft.
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SKU 51153-9000
Manufacturer Part Code 51153-9000

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