Rice Lake SURVIVOR 420HE Hostile Environment - Installation Manual - Manual (Page 6)

2 420HE Installation Manual
1.0 Introduction
The 420HE is a single-channel digital weight indicator housed in a NEMA 4X/IP66-rated FRP enclosure. The
indicator front panel consists of a large (1.8 in, 44.5 mm), six-digit, seven-segment LED display and six-button
keypad. Features include:
• Drives up to eight 350
or sixteen 700 load cells
• Supports 4- and 6-wire load cell connections
• Two configurable digital inputs
• Two configurable digital outputs
• Electronic data processing (EDP) port for full duplex, RS-232 communications at up to 38400 bps
• Printer port for full duplex RS-232 or active transmit only 20 mA current loop communications at up to
38400 bps
• Optional analog output module provides 0–10 VDC or 0–20/4–20 mA tracking of gross or net weight
values
• Available in 115 VAC and 230 VAC versions
The 420HE is NTEP-certified and pending Measurement Canada approval for Classes III, III HD, and III L at
10,000 divisions. See Section 7.12 on page 49 for detailed specifications.
1.1 Operating Modes
The 420HE has four modes of operation:
Normal (Primary) mode
Normal mode is the “default” mode of the indicator. The indicator displays gross or net weights as required,
using the LED annunciators described in Section 1.3 on page 3 to indicate scale status and the type of weight
value displayed. Once configuration is complete and a legal seal is affixed to the back of the indicator, this is
the primary mode in which the
420HE can operate.
Setup mode
Most of the procedures described in this manual require the indicator to be in setup mode, including
configuration and calibration.
To enter setup mode, open enclosure and press the setup switch once. The indicator display changes to show
the word
CONFIG .
Test mode
Test mode provides a number of diagnostic functions for the 420HE indicator. Like setup mode, test mode is
entered using the setup switch. See Section 7.9 on page 47 for more information about entering and using
test mode.
NOTE : Test mode is intended for factory use only.
Front Panel Setup Mode
Hold the UNITS key for three seconds to enter front panel setup mode. Use front panel setup to change
setpoint and to set the time and date.