User's Manual

Section 2, Page 2 01/2001, CATTRON

- THEIMEG

Typical method of operation (incorporating above safety features) using a radio controlled overhead

crane as an example:

The Operate (OPR) relay(s) is energized for the first time when:

The red STOP and rotary ON/OFF switches on the PS Controller are operated in the

proper sequence (first unlatch and pull up STOP switch to ‘RUN’, then rotate ON/OFF

switch to ‘ON’), the correct coded ‘i-Key’ is installed, and the target receiver/decoder

has power applied. With all these conditions satisfied, a matching address code is sent by

way of RF signal from the PS controller to the decoder.

The OPR relay is wired to the mainline (ML) contactor on the crane. Once the mainline is energized, a

continuously repeated valid signal must be received for function outputs to engage. If this signal is

interrupted for any reason, all function outputs will turn off unless programmed otherwise.

When operating within the USA, FCC rules state that RF transmitters in non-licensed controllers must

switch off within five seconds after the operator releases a function pushbutton. Consequently, the OPR

output is programmed to stay on for up to ten minutes after the last valid message is received. During

this time all Automatic Safety Override (ASO) monitored outputs must stay off or the ASO sensing in

the decoder will interrupt this hold up time, de-energizing OPR.

Figure 2-1 below shows an Operate (OPR) contact wired directly to the mainline (ML) contactor.

Provided the red STOP switch on the Pendant Controller is pulled out and the correct coded ‘i-Key’ is

installed, setting the green ON/OFF power switch on the Pendant controller to ‘ON’ will energize the

mainline contactor.

Figure 2-1. Operate (OPR) contact wiring

An auxiliary function may be used as a Reset (RST) output that will only be effective when the Operate

(OPR) relay has been closed. Momentary closure of the Reset (RST) relay picks up the mainline (ML)

contactor, which is maintained under control of the OPR. Thus, power is supplied to the controlled

device. If OPR opens, the mainline contactor releases, removing power from the controlled device and

stopping all motion.

120V

MANUAL

DISCONNECT

LL1

LL2

LL3

MOTOR

RECEIVER/DECODER

EXISTING CONTROLS

OPR

5.0A