22
MKU OCU
User Manual
8.
Operating the OCU
Note that dual pressure (DP) function key pushbuttons are pre-assigned through TransKey programming for two-
step operation. In other words, a second output is tied to the second level of button depression.
Typically, dual pressure OCUs send one of two output commands to the MCU from a single button. DP buttons
are paired to opposite directions of the same output (i.e., forward and reverse). These two buttons will control
direction and speed relays. The first level of depression on each button will command the desired direction and
first step of movement (two directions = two relays). The th
ird relay is operated by either button’s second level of
depression to the second speed output of the controlled machine. This could be a single relay, or two separate
relays assigned for the second speed step, or for the variable frequency drive (VFD) accelerate output (for the
button in use).
If the DP button is depressed to its first level, first speed is achieved and maintained as long as the button
remains at that level of depression. If the button is depressed to its second level, second speed is achieved. If the
operator releases pressure and allows the button to return to the first level, first speed is again achieved. Moving
directly from ‘OFF’ to the second level of depression can command second speed if sufficient pressure is applied.
For example,
one of two DP buttons labeled ‘FORWARD’ and ‘REVERSE’ is used at the first pressure level to
command the direction and first speed of the equipment. The second pressure level of the button in use will
command a second speed.
Note:
Depending upon the factory set configuration, the OCU Stop switch verification at Start-up may be
enabled or disabled.
WARNING
More than one remote control system may be used at, around, or nearby your operating facility.
Therefore, before inserting a TransKey into an OCU, you must insure the correct coded TransKey
is selected for the desired equipment to be operated.
If the wrong TransKey is inserted into an OCU, other remote controlled equipment located at,
around, or nearby your facility may become operational.
Failure to comply with the above warnings may result in unintended operation of remote controlled
equipment which in turn could result in serious injury or death to personnel and damage to
equipment.
1.
Ensure the correct Transkey is inserted.
2.
Release the red STOP switch. If the switch has been pushed down to the ‘STOP’ position, you will first have
to unlatch the switch knob by rotating in a clockwise direction.
3.
Set ON/OFF switch to ‘ON’. Power will be applied to the OCU and the ‘STATUS’ LED will illuminate RED.
8.1
If the Stop switch verification at Startup is enabled
1. Press the red STOP switch. The
‘STATUS’ LED will illuminate ORANGE.
2. Release (unlatch) the red STOP switch by rotating in a clockwise direction. The
‘STATUS’ LED will now
illuminate flashing GREEN at an approximate rate of 2 cycles per second. The OCU is ready for use and a
power up message has been sent to the target MCU. The targeted MCU will respond by energizing the
mainline contactor of your controlled machine.
Summary of Contents for MKU OCU
Page 1: ...A MKU OCU User Manual ...
Page 7: ...7 9M02 7641 A003 EN Version 1 0 MKU OCU User Manual ...
Page 36: ...36 MKU OCU User Manual Figure 15 Example Configuration Sheet for System Model UN3HS5D2A ...
Page 37: ...37 MKU OCU User Manual Figure 16 Example Configuration Sheet for System Model UN3H06D2 ...
Page 38: ...38 MKU OCU User Manual Figure 17 Example Configuration Sheet for System Model UN4H03D2 ...
Page 39: ...39 MKU OCU User Manual Figure 18 Example Configuration Sheet for System Model UN5H02S2 ...
