Microscan NL-200, User Manual

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6.1.1 Continuous Output, Switched Output, Selected Output
In continuous mode the output current Is fixed and continuous. Switched mode uses a trigger input to switch
the output on or off. Selected mode uses a trigger input to select between two different brightnesses.
The output current can be varied from 0% to 100% of full brightness.
6.1.2 Pulsed Output
The output is off by default. When the NL-200 is triggered it will wait for a delay and then pulse the
output. The delay, pulse width, retrigger delay and pulse intensity are all configurable.
Retrigger delay is the minimum allowed time from one trigger to the next. Any triggers that happen too
soon after the previous trigger are ignored. The retrigger delay is set in multiples of 100us.
In pulsed mode, the brightness can be set up to 1000% of its rating, but only for short
periods and at low duty cycles, so that the lighting does not overheat and get damaged.
The duty cycle is limited by ignoring triggers which are too soon after the previous trigger.
Output Brightness Allowed Pulse Width Allowed Duty Cycle
0 to 100% 999ms 100%
101% to 200% 30ms 30%
201% to 300% 10ms 20%
301% to 500% 2ms 10%
501% to 1000% 1ms 5%
So for example, if the brightness is set to 250%, then the NL-200 will not allow pulses greater than
10ms long. With 10ms pulses, if a trigger occurs within 50ms of a previous trigger (so that the duty
cycle would be greater than 20%) the trigger is ignored.
If necessary the NL-200 will limit the duty cycle by increasing the retrigger delay.
WARNING: To prevent possible overcurrent condition when operating NERLITE Strobe models, initiate the
brightness setting to 10%, then increase current appropriately.
6.1.3 Fault Detection
The NL-200 detects the following errors. When the output current is less than 100mA, some fault
detection is turned off.
Error Reason
PO Internal power dissipation is too high. Output turned off.
OP Output current to lighting is too low. The light is open circuit or there is not
enough supply voltage for the requested output current.
SH If the output voltage is too low, the controller detects that the output is short circuited.
HI The voltage required for the lighting has increased too much. Check for ageing of the
lighting or a failed LED.
LO The voltage required for the lighting has decreased too much. Check for ageing of the
lighting or a failed LED.
The user must press SEL to cancel the error and the NL-200 will then re-sense the light.
6-2
NL-200 Series Controller User’s Manual
General Description