Pelco C554M-A (5/98) Receiver Control Output for 12 VDC Camera Option, Coaxitron Receiver Presets

3.3.1 Receiver Control Output for 12 VDC Camera Option

NOTE: The Coaxitron® receiver with preset positions is designed for use with preset capable Coaxitron® controllers only.

The usual output for camera power is 24 VAC, accessed at pins 9 and 14 of the 37- pin AMP connector (see Table C) where camera AC (high) and camera AC (low) emerge as camera input power.

The output pin assignments remain the same for 12 VDC camera power options. However, pin 9 is positive (+) and pin 14 is negative (-).

3.4 COAXITRON® RECEIVER PRESETS

The Coaxitron® system uses precision linear taper potentiometers as position feed- back sensors. This feedback voltage is digitized and stored in the receiver. Preset storage is in a nonvolatile EEPROM. This assures the preset information is stored for future use.

Up to 32 presets can be stored in each receiver. Up to eight presets can be acti- vated by alarm contacts connected to the receiver. There is also an open collector output from the receiver to activate an external device when the alarm contacts are activated. Figure 3 shows the wiring for alarmed presets.

If multiple alarms are activated, the receiver will sequence between the alarm pre- sets at a 5-second dwell time per preset.

Refer to Figure 3 and Tables B, C, and D when assembling pin-to-pin wiring con- nections from preset domes, pan/tilts and lenses to the Coaxitron® receiver.

		PRESET POSITION ALARM ACTIVATION
	NOTE: ALARM OUTPUT MUST RETURN TO THE EXTERNAL DEVICE
		FOR THE ALARM CONDITION TO BE SWITCHED TO THE
COAXITRON® RECEIVER		MONITOR 1 OUTPUT OF THE MATRIX
37-PIN CONNECTOR		ALARM CONTACTS NORMALLY OPEN
17	ALARM INPUT 1
18	ALARM INPUT 2
19	ALARM INPUT 3
20	ALARM INPUT 4
21	ALARM INPUT 5
22	ALARM INPUT 6
23	ALARM INPUT 7
24	ALARM INPUT 8	ALARM CONDITION OPEN
		COLLECTOR OUTPUT BACK TO
25	ALARM OUTPUT	EXTERNAL DEVICE ALARM INPUT
26	ALARM COMMON	ALARM COMMON BACK TO
		EXTERNAL DEVICE

ALARM INPUTS ACTIVATE THE FIRST EIGHT PRESET POSITIONS

EXAMPLE: ALARM INPUT 2 ACTIVATES PRESET POSITION 2

Figure 3. Wiring Diagram for Pre-position Alarm Outputs

14 Pelco Manual C554M-A (5/98)