RTxxx LEDlighting controllers - User Manual
13.2 Restrictions
The maximum output power for an RT2xx is 30W per channel or 40W
total. For an RT4xx, it's 30W per channel or 50W total. The maximum
output power for an RT8xxF is 30W per channel or 100W total.
The following timings and restrictions are applied whenever settings are
saved (using the AW command).
B.1 Continuous Mode
The maximum output current is 3A (2A for an RTxxx-2).
B.2 Switched Mode
The maximum delay from a trigger input changing to the output current
being turned on or off is 10us. The maximum output current is 20A (2A for
an RTxxx-2).
B.3 Selected Mode
The maximum delay from a trigger input changing to the output current
being turned on or off is 5ms. The maximum output current is 0.5A.
B.4 Pulse Mode
The maximum output current is 20A (2A for an RTxxx-2). For high current
pulses the following limits apply:
Pulse current Pulse length limit
20A 100μs
12A 400μs
10A 1ms
5A 3ms
Pulses of 2A or more for pulse widths longer than 2ms may cause an error
or have a lower current towards the end of the pulse.
For fast pulse controllers (RTxxxF) the minimum pulse delay is about 2μs.
When overdriving or using the retrigger delay, the minimum delay is
around 5μs.
For pulse widths less than approximately 150us, the output voltage and
current cannot be measured. Because of this, fault detection is disabled
and the following restrictions apply:
For pulse currents greater than 0.5A, the duty cycle is restricted to 1%.
For pulse currents less than or equal to 0.5A, the duty cycle restricted to
10%.
Special note for RT8xxF controllers: If you need to generate a variety of
output currents, the highest current loads should be connected to the low-
numbered output channels. For example CH1, CH2... This minimises the
spread of high currents on the internal PCB and helps to maintain a low
temperature rise in the unit.
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RTxxx LEDlighting controllers - User Manual
13 Reference information
This section contains the specification for the RTxxx and any restrictions
on its use. Error and event codes are also listed.
13.1 Specification
The RTxxx range of controllers has a 2 amp option with a '-2' suffix, and a
fast pulsing option with an 'F' suffix. The specification for these is shown
below alongside standard versions.
RTxxx-20 RTxxx-2
Each output channel
3Amaximum continuous /
20A pulsed, 46V output and
30W average output power*
2Amaximum continuous /
2A pulsed, 46V output and
30W average output power*
Lighting rating
12V to 36V in steps of 1V
100mA to 3A in steps of 5mA
12V to 36V in steps of 1V
100mA to 2A in steps of 1mA
Operating modes Continuous, strobe, switch, and selected
Trigger input
Opto-isolated, standard or inverted operation
3V to 24V
Pulse width:
(RT2xx, RT4xx )
20 microseconds to 1 second. Repeatable to
0.1 microseconds.
Pulse width:
(RT2xxF, RT4xxF RT8xxF)
1 microsecond to 1 second. Repeatable to
0.1 microseconds.
Trigger delay:
(RT2xx, RT4xx )
20 microseconds to 1 second. Repeatable to
2 microseconds.
Trigger delay:
(RT2xxF, RT4xxF RT8xxF)
2 microseconds to 1 second. Repeatable to
2 microseconds.
Internal trigger timer 0.2Hz to1kHz
Supply voltage 24VDC to 48VDC regulated
Heat dissipation 10W maximum
*Refer to Section 13.2, Restrictions
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