23
Dymax BlueWave® LED Flood System User Guide
Output Signal Definition
NOTE
:
Output signals which are asserted can sink up to 2.5 milliamperes with 5V maximum between signal
output pin and +24VDC Return/Signal Common. The current flows through the output signal pin to the +24VDC
Return/Signal Common pin. Output signals which are not asserted may draw 5 microamperes of current at 24
VDC +/- 10%.
Table 2 Outputs Signals from the Flood Unit on the PLC Interface
Name
Pin Number
Definition and Notes
System Health
15
When this signal is asserted, the controller is functioning properly and the
PLC outputs are valid. If this signal is not asserted the PLC outputs are not
valid.
System Ready for
PLC Control
7
When this signal is asserted, the system will respond to PLC Control. The
signal will be unasserted if the system is not in PLC Mode, or a user is
adjusting a menu while in PLC Mode. When this signal is unasserted, the
system will not respond to actions commanded by the PLC.
Thermal Warning
8
When this signal is asserted, the LED array or the power supply is being
operated at a temperature in excess of its specification or airflow to the LED
array or power supply is restricted. If this signal is not asserted, the flood
system is being operated within specifications and airflow is not restricted.
Typically this signal is used to shut down an automated process in an orderly
fashion so that corrections can be made before the flood system shuts down
to overheating.
System Fault
14
When this signal is asserted, the system has detected a fault and will not
respond to any PLC commands until an operator corrects the fault.
LFA Activated
16
This signal indicates the state the LED unit.
When asserted, the LED is on. When this signal is not asserted, the LFA is off.
LFA ID’s
17 (ID4)
18 (ID2)
19 (ID1)
As a group, these three signals indicate the part number of the LED array
attached to the power supply
When a RediCure
™
LED array is connected, LFA ID4 and LFA ID1 are asserted.
When a PrimeCure
™
LED array is connected, LFA ID4 is asserted.
When a VisiCure
™
LED array is connected, LFA ID4 and LFA ID2 are asserted.
NOTE: If no array is connected, the unit will report a system fault and LFA ID2
and LFA ID1 are asserted.
Intensity Status
21
This signal output provides a means for the PLC to monitor intensity. It is a
pulse-width modulated contact closure to +24VDC/Signal Common. When
the contact is always closed, the LFA is operating at 100% of rated intensity.
When the closed 50% of the time, the LFA is operating at 50% of rated
intensity. The contact closure frequency (pulse width modulation frequency)
is 2.0 KHz.
