Section 2, Page 2
01/2001, CATTRON
- THEIMEG
TM
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
L1
ML
ML
MANUAL
DISCONNECT
L2
L3
LL1
LL2
LL3
TO
MOTOR
RECEIVER/DECODER
EXISTING CONTROLS
OPR
R
C
5.0A
Summary of Contents for i-Key
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