AccuPro-5000
™
MEASUREMENT SYSTEM OPERATOR MANUAL
Issued by Department:
Engineering
Doc. Number:
5000-00-00-002
Revision:
02
Effective Date:
10/05/2021
File: 5000-00-00-002-r2_
AccuPro_5000_Operator_Manual
Copyright© 2021 Scaletron Industries, Ltd
All Rights Reserved
Page
19
of
63
Alarm notification. An associated LED indicates whether the state of the relay is energized (ON) or
de-energized (OFF).
•
RS-232 Serial Interface
: A half-duplex serial interface for diagnostics and exporting of logged
data.
•
Programmer Interface
: The SAM processor is programmed via an Atmel ICE. Model #
ATATMEL-ICE, A09-2140/08.
•
System Reset
: Pressing this button asserts a system reset that reboots the microprocessor
resulting in a systematic initialization of all peripheral hardware.
•
System Mode Controls
: A 2-position slider-switch and 3-pin jumper field define the mode of
system operation.
•
LCD Board Interface
: The Main Processor Board communicates both control activity and display
messages with the LCD Board via a full-duplex, RS-232 comm link.
•
Real-Time Clock
: A battery-backed time source that allows time-stamping of events. The device
includes Flash Memory for storage of system configuration data.
•
SAM Processor
: Atmel #ATSAMD21J18A-AU containing internal EEPROM and SRAM.
•
SRAM
: Battery-backed static memory.
4.4
Analog Input Board
With reference to Figure 4, an AIB defines the existence of an active scale, or channel. The board
includes two terminal block connectors for attaching load-cell and leak-detect sensor (optional) wires.
The load-cell interface includes the signals shown in
, which follow the industry standard for
color-code of wires. Note that the interface does not include a connection for an optional cable shield
wire, which should instead be attached to an earth-ground connection available on the power-supply
bracket.
CONTACT LABEL
DESCRIPTION
RED
Positive terminal of +7.5 VDC Excitation voltage
GRN
Positive terminal of load-cell signal
WHT
Negative terminal of load-cell signal
BLK
Negative terminal of Excitation voltage
Table 3: Load-Cell Interface
The Scale-Base may be configured with a factory-installed leak-detect sensor for detection of liquid
chemical spills. The available signals of the Leak-Detect Sensor Interface are shown in
CONTACT LABEL
DESCRIPTION
GND
Digital Ground
/LD
Active-Low, Leak-Detect signal
+5V
+5 VDC supply voltage for external sensor
Table 4: Leak-Detect Sensor Interface