Triguard SC300E TAI16AIR 16-Channel Analogue Input Termination Card (TAI16AIR) Issue 5 October 2005 INTRODUCTION PURPOSE The TAI16AIR termination card enables the connection of up to 16 loop-current, field devices to the channel inputs of a SC300E Analogue Input Module. The field devices are connected via individual cables to screw terminals on the card, which is in turn connected, via multicore cable and DIN41612 connectors, to the backplane of the SC300E chassis.
Triguard SC300E Model TAI16AIR Maximum field supply voltage 33Vdc Current rating 50mA per channel Fuse in each positive line to field 1A, fast acting, indicating Fuse in each negative line to field 63mA, fast acting Terminating resistor 250 ohm, 0.5W, 0.1% high stability, 3ppm/°C Chassis cable connector 34 way DIN41612 Field cable connector Screw terminal to suit 2.
Triguard SC300E TAI16AIR 16-Channel A/I Termination Card ENVIRONMENTAL SPECIFICATIONS The maximum ambient temperature measured at the hottest point within the Triguard system shall not be greater than 60 degrees centigrade.
Triguard SC300E TECHNICAL DESCRIPTION PHYSICAL The TAI16AIR termination card comprises a PCB assembly mounted in a moulded carrier that can be snapped on to all commercially available styles of DIN mounting rail. Connection to the chassis backplane is via a multicore cable terminated at each end by a DIN 41612 connector. Field connections are made to screw terminals.
Triguard SC300E TAI16AIR 16-Channel A/I Termination Card Figure 2-2 Leading dimensions and mounting schematic TAI16AIR October 2005 – Issue 5 5
Triguard SC300E EXTERNAL CONNECTIONS Fixed Terminal Details Chassis connector J1 Connector, 34-way, DIN41612, female Field terminals 1 to 16(+) and 1 to 16(-) Screw terminals (16AWG) Field power supply inputs FS1 and FS2 Header, 2-way, Molex Minifit Jr Alarm output PL1 Header, 2-way, Molex KK Ground terminal TS1 Provision for M3 ring terminal to suite 2.5mm2 w i r e THEORY OF OPERATION The termination card circuit comprises 16 channels each fused at 1A with a fast acting, indicating fuse.
Triguard SC300E TAI16AIR 16-Channel A/I Termination Card Figure 2-3 Functional diagram TAI16AIR October 2005 – Issue 5 7
Triguard SC300E Figure 2-4 Circuit diagram showing a single channel 8 TAI16AIR October 2005 – Issue 5
Triguard SC300E TAI16AIR 16-Channel A/I Termination Card SUPPLEMENTARY INFORMATION Function DIN Connector J1 pins +ve -ve Common field supply negative 1a Cable screen to chassis backplane earth 1c Ch1 2a 2c Ch2 4a 4c Ch3 6a 6c Ch4 8a 8c Ch5 10a 10c Ch6 12a 12c Ch7 14a 14c Ch8 16a 16c Ch9 18a 18c Ch10 20a 20c Ch11 22a 22c Ch12 24a 24c Ch13 26a 26c Ch14 28a 28c Ch15 30a 30c Ch15 32a 32c TAI16AIR October 2005 – Issue 5 9
Triguard SC300E SERVICING SCOPE No servicing is necessary CAUTION A blown fuse should only be replaced when the cause of the fault has been found and rectified. The only repair possible to the termination card is the replacement of a blown fuse. If the card is found to be faulty in any other respect it should be replaced and returned for repair.
Triguard SC300E TAI16AIR 16-Channel A/I Termination Card SERVICE SUPPORT SPARE PARTS Spare parts and technical advice can be obtained from your local area offices.
