Hirschmann PRS 80, Operators & Service Manual

Page: 28 / 48

Operator’s Manual PRS 80 28
6.6 A2B
6.6.1 Transmitter / Switch
The transmitter and battery housing are made of a special plastic that resists impact and will not
become brittle even in low temperatures.
LED
Travel Hook
Option, Customer Supplied
6.6.2 Transmitter LED
The transmitter has an LED on the bottom for diagnostics. The LED should be on when in a two-block
condition or when the weight is lifted. The LED will flash rapidly during a 2-block condition and will stop
flashing after the switch is in a two-block condition for more than 15 seconds. The LED will flash
randomly approximately every 2 seconds when the switch is transmitting. When in sleep mode, the
LED will not flash.
6.6.3 Travel position (optional)
Designed into the transmitter plate is a small hole into which a hook or hardware can be installed to
fasten the chain and put the switch into a permanent 2-block condition. This serves 2 functions.
1. It extends battery life.
2. It prevents the lockouts and alarms from engaging and disengaging due to bounce while
traveling.
During this condition, the system is in permanent lockout and the system will not function until the
chain is unhooked.
To use the feature, attach any part of the chain into the hook. When it is desired to use the switch
again, simply unhook the chain to allow the switch to close.
The chain must be unhooked before the crane is operated.
© Hirschmann PRS80 REV. C 09/26/05 190183_D.DOC