Filter
Top Products
8 Pelco Manual C939M-D (7/00)
OPERATION
The ERD97P21-U Receiver runs a configuration cycle at startup to detect preset capabili-
ties and verify that the unit functions properly.
To start the receiver, plug it in. Set the ON/OFF switch to ON. The pan/tilt unit tilts down and
pans left, followed by a tilt up and a pan to the right. The lens zooms out and focuses far.
The lens zooms in and focuses near. During the configuration cycle, the receiver will not ac-
cept any commands.
LENS VOLTAGE ADJUSTMENT
The lens voltage is adjusted manually by turning a potentiometer on the PC board. Refer to
Figure 1. The range of adjustment is from 5 VDC to 10 VDC.
MOTION COMMANDS
Motion commands tell the receiver to start or stop a pan/tilt or lens motion. More than one
motion command can be requested at a time. There is a 60-second timeout on all motion
commands. If the receiver initiates a motion and no commands are received for 60 seconds,
the receiver stops all motion. This prevents the receiver from being driven continuously if
communication problems arise.
PRESETS
The ERD97P21-U can store up to 80 presets. (To set presets, refer to the instruction
manual for the control unit.) All presets are cleared if the preset clear switch is pressed and
held down while the processor is either reset or powered up.
If any motion command or alarm is received during a move to a preset position, the com-
mand is aborted and the new command is initiated.
ALARM AND AUXILIARY FUNCTIONS
The alarm inputs are reserved for the first nine presets. If an alarm becomes active and
there is a preset for the alarm, the preset is initiated. For example, if alarm 4 is activated,
the camera moves to preset 4. If more than one alarm is activated, the receiver sequences
between the corresponding presets, stopping for five seconds at each preset.
If a motion command or move to preset command is received while alarms are active,
alarm processing stops and the command is processed. After 60 seconds, alarm process-
ing resumes. The alarm lockout timer is reset if all alarms become inactive. Alarm process-
ing restarts immediately if an alarm is triggered.
AUXILIARY OUTPUTS
There are eight auxiliary outputs on the optional alarm/auxiliary board. These relays are
opened and closed by receiver software commands.
SCANNING
FRAME SCANNING
To start frame scanning, call preset 98.
To stop frame scanning, call preset 96.
Panning motion is not continuous during frame scanning operation. The receiver moves the
pan/tilt unit to the right for three seconds, stops for three seconds, pans to the right again
for three seconds. When the unit hits a limit stop, it reverses direction.
If any motion command or alarm is requested during frame scan, the scanning is aborted
and the new command is initiated.