REVERSER & INERTIA CONTROL
The setting of the reverser relay and the inertia period is controlled by a separate reverser channel with a
centre zero detent control. Small knob on RCS Tx handpieces using Channel # 3.
To correct for errors in transmitted pulse widths, the 1.50 ms stop PWM setting value can be user calibrated.
The inertia period quoted is the time to increase from zero to full motor voltage, and vice versa. It is
adjustable in units of 1 second, depending on the rotation of the reverser control.
With default settings, the Reverser Relay is de-energised in Forward. If required, this can be changed by
the user to be de-energised in Reverse.
REVERSER RELAY
The reverser relay will change state only when the required direction of operation is changed from Forward
to Reverse and vice-versa. It will not change state when the reverser control is set to Stop from either
direction of operation.
The relay state will only be changed when:
1: The actual motor voltage has reached zero, and has remained at zero for at least one second, and
2: The reverser control has been set to the opposite direction, and
3: The transmitter speed control has first been set to zero [if not already at zero], and
If the reverser control is set the opposite direction with a motor voltage greater than zero, an immediate
Emergency Stop will be executed [See below].
OPERATING MODE
The # OMEGA-10 has three user selectable operating modes:
1 Standard Linear 0% to 100% PWM Output for zero to maximum speed demand.
2 Shunt Control [1]. Non Linear 0% to 100% PWM Output for zero to maximum speed demand.
Decreased output at low settings of the Tx speed control [25% out at 50% in]
3 Shunt Control [2]. Linear 0% to 50% PWM Output for zero to maximum speed demand.
See Page # 1 for graph of operating mode characteristics.
The current operating mode is indicated by LED flash at PWM output = Stop [see above], unless an
emergency stop condition is present [see below].
TO CHANGE THE OPERATING MODE.
1. In normal operation, set Speed = zero, & wait until the LED indicates that zero speed has been achieved.
2 Press and hold push button switch for 2.5 seconds. The LED will flash rapidly.
3 When the LED changes to fully on, after 2.5 seconds, release SET-UP push button switch & the unit will
immediately change to the next mode. After Mode 3, it will revert to Mode 1. The LED flash sequence will
immediately change to the indicate the new mode.
Repeat Steps 1 to 3 to change the operating mode again.
Each time the operating mode is changed, the new settings are stored in non-volatile memory and will be
remembered until changed again.
POWER PROTECTOR
If you have turned on the handpiece with the regulator away from the off position, the OMEGA-10 will not
give you power until you have returned the regulator to off, then there is a one second delay.
If control is too abrupt or too sluggish, you can adjust the power curve on the OMEGA-10 as shown above.
EMERGENCY STOP.
During normal operation, the inertia control is operational for both increasing and decreasing motor voltages.
With high inertia settings, this can result in a significant period to bring the vehicle to rest, even if the
transmitter speed control is switched rapidly to zero speed.
For safety reasons, the OMEGA-10 incorporates an emergency stop feature to over-ride the inertia control
setting and immediately de-energise the motor.
To activate emergency stop from any speed setting, set the reverser control to the opposite direction.
The OMEGA-10 will immediately enter emergency stop mode, and de-energise the motor, indicated by the
LED flashing rapidly emergency Stop.
The emergency stop will be maintained until reset manually by the operator by setting the Speed control
back to zero speed, and the Reverser control to Stop. Normal operation will then resume automatically.
On initial power up of the OMEGA-10, an emergency stop will be set automatically, to ensure that the motor
is held at zero speed, irrespective of the initial transmitter speed setting until the transmitter speed control
has first been set to zero speed, and the reverser control to stop.
WIRING UP THE LOCO
The recommended wiring method is shown on Page # 3. The 100W OMEGA-10 requires a suitable fuse for
protection. For maximum protection use a 3 amp fast blow fuse for smaller locos. A 6 amp fast blow fuse
should be used for larger locos. If any erratic behaviour fit the supplied Balun core choke in motor leads.
The 3 x wire servo lead is plugged into the Rx Reverser position. Usually Ch # 3.
The single white wire is plugged into the Rx Throttle position. Usually Ch # 1.
JST In-Line connector cables are available separately. See the RCS website.
