Operator’s / Service Manual, PRS 40 EZ
© PRS 40 EZ REV A 03/16/06
190201_A
2
3 FEATURES
The PRS 40 EZ has the following features:
•
Can be hardwired to most PAT sensors.
•
Wireless operation option of multiple sensors.
•
Easily and clearly shows the operator required information.
•
Multi language. The system can be setup to display text in both English and Spanish.
•
Multiple limits can be set.
•
Minimum of 500 feet LOS.
•
Can display in multiple units.
•
Built in lockout relay. Rated at 5 amps
•
Tare
function.
•
Low
battery
indication.
•
Expandable
•
Direct replacement for the EI33
4 SYSTEM
DESCRIPTION
4.1 CONSOLE
The console has 2 functions:
•
Accepts inputs from the crane operator (reeving, limits and setup)
•
Displays important data and information from the sensors
The operator’s console should be mounted in the operator’s field of vision.
4.1.1 Liquid Crystal Display
The Liquid Crystal Display (LCD) used in the PRS 40 EZ console is a wide temperature-range graphic
display with transflective characteristics that give it a high visibility in sunlight and during backlit night
operation. Due to the nature of any LCD, it works on the principle of polarization of light. It should be
noted that dual polarizations that are at a certain angle to each other can reduce the amount of light
up to completely eliminating it if that angle becomes perpendicular. This can have significance if the
operator is wearing polarized sunglasses that happen to be perpendicularly polarized in relation to the
LCD’s polarization. In this rare case, the operator has to work without sunglasses or find different
sunglasses that do not have this characteristic, in order to avoid having the visibility of the display
impaired.
The LCD contains an automatic temperature compensation that will adjust the LCD’s contrast
according to the surrounding temperature.
