Spectrex 20/20CTIN-CTIP Flame Detector User Manual

Page 37

Spectrex Inc. - SharpEye

CCTV Model Flame Detector Manual – TM 788100, Rev. A January 2005

6.7 Terminal wiring (See Fig. No.10 and No.11.)
The detector contains a Terminal Board consisting of two (2) terminal blocks (Item
4). The left terminal block is labeled 1 to 7, the right terminal block is labeled 8 to
14.

The following describes the function of each electrical terminal of the
detector:

• Power Supply (Terminal Numbers 1, 2):

Input power - Terminal No. 1.
The RETURN - Terminal No. 2.

• Manual Bit Activation (Terminal No. 3):

Terminal No. 3 is used for Manual BIT activation.
Manual BIT is initiated by a momentary connection of Terminal No. 3 to the
power supply Return line.

• Fault Relay (Terminal Numbers 4, 5):

The Fault output is N.O. SPST relay at Terminals No. 4 and 5. The contacts
are energised closed when the detector is in its normal operational condition.

• Alarm Relay (Terminal Numbers 6, 7, 8):

The Alarm output is a change over contact relay (SPDT).
Terminal No. 6 - N.O. relay contact.
Terminal No. 7 - COMMON relay contact.
Terminal No. 8 - N.C. relay contact.

• CCTV (Terminal Numbers 9, 10):

The CCTV output is a standard video output available at PAL or NTSC
according to Model No.20/20 CTSN for NTSC and 20/20CTIP for PAL.
Terminal No. 9 - video signal (-)
Terminal No. 10 - video signal (+)

Note

To protect the dry contacts from voltage surges when connected to reactive
loads (electric motors, sirens, etc.), connect an appropriate varistor over these
contacts.