Difference between revisions of "Motech LPS-300 series"

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The '''Motech LPS-300''' is a series of 1-channel or 3-channel programmable power supplies with optional RS232 connectivity.  
The '''[[Motech]] LPS-300''' series of programmable power supplies consists of 5 1-channel or 3-channel devices with optional RS232 connectivity.  


The devices were also sold as the ''Amrel LPS-301'' by ''American Reliance'' and partly under further brands.
The devices were also sold as the ''Amrel LPS-301'' by ''American Reliance'' and partly under further brands.




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|}
|}
These specifications are common to all models:
{| border="0" style="font-size: smaller" class="alternategrey sortable sigroktable"
|-
|-
! style="text-align: left;" colspan="3" | 30 V Channels
|-
| style="width: 20em; text-align: left;" |
| <b>Voltage</b>
| <b>Current</b>
|-
|-
| Programming Resolution
| 10 mV
| 1 mA
|-
| Programming Accuracy
| 0.05% + 20 mV
| 0.15% + 5 mA
|-
| Readback Accuracy
| 0.1% + 20 mV
| 0.2% + 5 mA
|-
| Ripple (10 Hz to 20 MHz)
| 1 mV rms / 10 mV p-p
| 10 mA rms
|-
| Load Regulation
| 0.001% + 1mV
| 0.01% + 1mA
|}
These specifications apply only to models having a 3.3V/5V output:
{| border="0" style="font-size: smaller" class="alternategrey sortable sigroktable"
|-
|-
! style="text-align: left;" colspan="3" | 3.3/5V Channel
|-
| style="width: 20em; text-align: left;" |
| <b>Voltage</b>
| <b>Current</b>
|-
|-
| Ripple (10Hz to 20MHz)
| 2 mVrms / 10mVp-p
| 10mArms
|-
| Load Regulation
| 0.001% + 1mV
| 0.01% + 1mA
|}


= Protocol =
= Protocol =
The communication with the device is via an optional RS-232 port (Option 02). The port parameters are 2400 Baud, 8n1.


All commands are plain ASCII. All commends are terminated by \r, \n or \r\n. A commend sent before the reply (usually ''OK'') will be ignored.
{| border="0" style="font-size: smaller" class="alternategrey sortable sigroktable"
|-
! Commend
! Reply
! Description
|-
| | BEEP(0|1|2|3)
| OK
| Beeper function 0: disable; 1: enable; 2: force alarm 3: off
|-
| | CALI(0|1|2)
| ?
| Calibration 0=end; 1=begin; 2=input parameter
|-
| HELP
| ?
| Output command list
|-
| | IOUT(n)
| ?
| Current readback
|-
| | ISET(n) d.dd
| ?
| Set output current
|-
| | LOWA(0|1)
| ?
| CC output compensated 0=off; 1=on (what is that?)
|-
| MODEL
| ?
| Get model number
|-
| | OUT(0|1)
| OK
| Disable/enable output
|-
| STATUS
| <decimal>
| Working status, bitwise encoding.<br/>Bit 0, channel 1 mode: 0: CV 1: CC.<br/>Bit 1, channel 2 mode: 0: CV 1: CC.<br/>Bit 3,2: 00: independant; 10: tracking to channel 1 11:Tracking to channel 0.<br/>Bit 4, digital output 3: 0: off; 1: on.<br/>Bit 5, digital output voltage: 0: 5 V; 1: 3.3 V.<br/>Bit 6, output 1/2: off; 1: on.<br/>Bit 7, output 3: 0: ok; 1: overloaded.<br/>Bit 8, Fan: 0: off; 1: on<br/>Bit 9, beeper: 0: off; 1: enabled<br/>Bit 10, CC output compensated: 0: off; 1: on<br/>
|-
| | TRACK(0|1|2)
| ?
| Tracking independant/from channel 1/from channel 2
|-
| |VDD(0|3|5)
| ?
| Set ("digital") output 3 0=off; 1=3.3 V; 5=5 V
|-
| VERSION
| ?
| Get version number.
|-
| | VOUT(n)
| ?
| Voltage readback
|-
| VSET(n) dd.ddd
| ?
| Set output voltage
|-
| *
| \r\nERROR
| Error message
|}


= Resources =
= Resources =

Revision as of 08:56, 9 May 2014

The Motech LPS-300 series of programmable power supplies consists of 5 1-channel or 3-channel devices with optional RS232 connectivity.

The devices were also sold as the Amrel LPS-301 by American Reliance and partly under further brands.


Specifications

The models differ only in the number of available channels, maximum voltage and maximum current output:

Model Power Output Channels Voltage/Current
LPS-301 30 W 1 30 V/1 A or 15 V/2 A
LPS-302 60 W 1 30 V/2 A or 15 V/4 A
LPS-303 90 W 1 30 V/3 A
LPS-304 70 W 3 ±30 V/1 A or ±15 V/2 A; 5 V/2 A
LPS-305 165 W 3 ±30 V/2.5 A; 3.3 or 5 V/3 A


These specifications are common to all models:

30 V Channels
Voltage Current
Programming Resolution 10 mV 1 mA
Programming Accuracy 0.05% + 20 mV 0.15% + 5 mA
Readback Accuracy 0.1% + 20 mV 0.2% + 5 mA
Ripple (10 Hz to 20 MHz) 1 mV rms / 10 mV p-p 10 mA rms
Load Regulation 0.001% + 1mV 0.01% + 1mA

These specifications apply only to models having a 3.3V/5V output:

3.3/5V Channel
Voltage Current
Ripple (10Hz to 20MHz) 2 mVrms / 10mVp-p 10mArms
Load Regulation 0.001% + 1mV 0.01% + 1mA



Protocol

The communication with the device is via an optional RS-232 port (Option 02). The port parameters are 2400 Baud, 8n1.

All commands are plain ASCII. All commends are terminated by \r, \n or \r\n. A commend sent before the reply (usually OK) will be ignored.

Commend Reply Description
BEEP(0|1|2|3) OK Beeper function 0: disable; 1: enable; 2: force alarm 3: off
CALI(0|1|2) ? Calibration 0=end; 1=begin; 2=input parameter
HELP ? Output command list
IOUT(n) ? Current readback
ISET(n) d.dd ? Set output current
LOWA(0|1) ? CC output compensated 0=off; 1=on (what is that?)
MODEL ? Get model number
OUT(0|1) OK Disable/enable output
STATUS <decimal> Working status, bitwise encoding.
Bit 0, channel 1 mode: 0: CV 1: CC.
Bit 1, channel 2 mode: 0: CV 1: CC.
Bit 3,2: 00: independant; 10: tracking to channel 1 11:Tracking to channel 0.
Bit 4, digital output 3: 0: off; 1: on.
Bit 5, digital output voltage: 0: 5 V; 1: 3.3 V.
Bit 6, output 1/2: off; 1: on.
Bit 7, output 3: 0: ok; 1: overloaded.
Bit 8, Fan: 0: off; 1: on
Bit 9, beeper: 0: off; 1: enabled
Bit 10, CC output compensated: 0: off; 1: on
TRACK(0|1|2) ? Tracking independant/from channel 1/from channel 2
VDD(0|3|5) ? Set ("digital") output 3 0=off; 1=3.3 V; 5=5 V
VERSION ? Get version number.
VOUT(n) ? Voltage readback
VSET(n) dd.ddd ? Set output voltage


* \r\nERROR Error message

Resources

  • LPS-301 - LPS-304 User Manual [1]
  • LPS-305 User Manual [2][3]
  • Datasheet [4]
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