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PALC

PALC Model 3 (NEW!)

Programmable / Acquisition / Logger / Controller

Upgraded version An improved data acquisition "toolbox" with several additional features in addition to all of the features of the previous SOSI Model 2. In addition to data acquisition, control and alarm functions, DATA LOGGING memory has been added to compliment the stand-alone controller feature.

Major feature additions include

  1. Data logging with 65,000 sample non-volatile EEPROM memory. Two memory modes - overwrite previous data, or append data to allow starting and stopping data logging while saving previous data.
  2. Additional A/D channel for a total of 6 analog inputs.
  3. Quadature Encoder Interface.
  4. 5.12 V, 100 mA reference output (twice the 50 mA of Model 2).
  5. User enabled conversion of individual channels.
  6. Six independent controller set-points which may be set to monitor any analog input and activate any output (versus two set-points pre-assigned to each channel in Model 2).
  7. New case design with plastic cover and screws supplied.
Programmable Acquisition Logger Controller Model 3
$119.00
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Features

  • Eight channels: (6) 10-bit A/D, (1) RPM (60/t), (1) either frequency or event counting.
  • These channels are independently configurable to be a digital input or output.
  • High current (1.5 A) MOSFET output switches 12V loads and power relays.
  • Six programmable setpoints which control any output for control or alarm purposes.
  • Precision 5.12V voltage output for supplying external sensors and circuits.
  • Sample triggered by internal time-base, logic input or serial interface.
  • Long life battery operation for field use.
  • Settings saved in non-volatile memory. Auto-resume option resumes run mode after battery replacement.
  • 9600 baud serial interface requires no propietary software. No operating system dependency.
  • Menued text interface in plain English with text typing auto-completion feature.
  • No software drivers to install. Log data with serial communication program. Plot data using any graphing program
PALC Connection Diagram

Specifications
Parameter Specification
All Inputs Max. Input Voltage: -0.3 to 6.0 V
Max. Input Current: 200 mA all inputs combined.
A/D converter Inputs Range: 0 - 5.12 V
Resolution: 10 bits (5.0 mV/bit)
Accuracy: ±10 mV
Programmable software gain: 1 to 64
Encoder Counter Rollover Range: 1 - 65535
Index Modes:
A) Automatic set/reset to MAX/0
B) external synchronized by external signal
RPM Input Speed: 60 - 65535 RPM (for sample period 1 sec).
Interface: 5 V TTL level input.
Programmable software divide: 1 to 8
Frequency/Event Counter Input Frequency: 0 - 30,000 Hz
Counter: 16 bit, 1 - 65535
Counter Clock Edge: high to low transition.
Interface: 5 V logic level input.
Digital Outputs CMOS output levels, source 5 mA @ 3.5V, sink 7mA @ 1.5V.
Digital Inputs (ST) Logic Low < 1.0 V
Logic High > 4.1V
Digital Outputs (TTL) Logic Low < 0.8 V
Logic High > 2.1 V
Mosfet Power Switch Max. Current: 2.0 A switched to GND, open drain.
Max. Open Circuit Voltage: 32 V, zener diode protected.
On Resistance: 0.06 ohm
Sample Period Fast Rate: 1Hz, 2Hz, 5Hz, 10Hz
Slow Mode: 00:01 to 10:59 min:sec
Voltage Reference Output Voltage: 5.12 V ± 0.5%
Current: 100 mA
Other: linear regulated, 0.3 ohm output switch.
Input Supply Voltage 1.8 V to 3.0 V supplied by 2 AA cells.
Communication RS-232 9600 Baud, 1 stop bit, no parity, no handshaking. ASCII only
Data Format Data Output: Text row. Time (HH:MM:SS) or sample count (NNNNNN) column, followed by seven columns of data. Delimiter is space.
Output data terminator: CR+LF or CR only,
Input data terminator: CR+LF, CR, LF (auto-detected).
Indicator LED Color: green. Indicates sample action.
A test pin near the LED provides a 2 V pulse during a sample. This may be used to signal external instruments.
Input Supply Voltage 2V to 4.5V maximum. Supplied by 2 size AA cells.
Low Battery Indication For battery supplied voltage < 2.0 V to 2.1V
[LOWBAT] string will be prepended to output data string.
Battery Life (2200 mAh alkaline cells, outputs unloaded) 30 days continuous service while converting and sending by RS-232 to host computer.
3 years in sleep mode.
Current Drain (all outputs unloaded, no floating digital inputs) 3.4 mA typical while active and driving an active RS-232 serial port.
1.5 mA typical while active but not driving a port (used as a controller for example).
90 uA typical in sleep mode.
Dimensions 4.35 x 2.2 x 1.1 (inches)
4 x 0.17 diameter mounting holes
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