411, 611 & 325 OCU
User Manual
17
9M02-8999-A001-EN
7.3 Activating the System
The following assumes that the MCU has been installed according to the associated user manual.
Ensure that the OCU being used is the correct one for the machine to be controlled, an OCU may operate
equipment that is many hundreds of feet away. Each system is assigned a unique address, the OCU and MCU
both use this address and it is not normally duplicated, the OCU should have a label on it identifying the machine
to which it is assigned.
WARNING
More than one remote control system may be used at, around, or nearby your operating facility.
Therefore, before selecting an address for a system or spare you must ensure that it is the correct
address for the desired equipment to be operated.
If the wrong address is programmed into an OCU or MCU, other remote-controlled equipment
located at, around, or nearby your facility may unintentionally become operational.
Failure to comply with the above warnings may result in serious injury or death to personnel and
damage to equipment.
7.4 Operating the OCU
7.4.1 Momentary Transmission Mode
For systems configured in the Momentary Transmission (MT) mode, the OCU will (assuming no faults and good
battery) transmit the STOP command from the OFF, Passive or Active States but will not transmit command
functions until the Start sequence (STOP / START) has been completed. The OCU will continue to transmit for 5
seconds after any command button has been released or the stop switch has been pressed, then cease
transmitting. The LED and Haptic indications for Stop being pressed in Sleep or Passive mode are no different to
those shown in the following paragraphs.
WARNING
Momentary Transmission (MT) mode should not be used where it must be guaranteed that the
OCU will be able stop the machine, for these applications a continuous mode of transmission must
be used. Additionally, in MT Mode the MCU main contactor control safety relays can be configured
to stay turned on for varying lengths of time including infinite, or until the OCU has commanded
them to turn OFF.
MT should only be used where a risk assessment has indicated that this mode of operation
presents no additional risk.
In MT mode there is no guarantee that when an OCU button is pressed it will manage to
communicate with the MCU.
Failure to comply with the above warnings may result in serious injury or death to personnel and
damage to equipment.
7.4.2 Transition to Passive Mode
From an OFF state the OCU can be powered up by pressing the START button, this will wake the OCU from a
deep sleep state to a fully tested PASSIVE mode where it is waiting for user input to move into another
operational mode.
The LEDs and Haptic will be tested at this point so you will see all LEDs flash briefly and the Haptic buzz to
confirm they are all working.
The center Status and Right-hand LEDs 1 & 2 will then illuminate, the battery status will be shown on LEDs 1 & 2,
after a few seconds LED1 & 2 will turn back OFF.
