TrustedTM PD-T8842 TrustedTM Versatile FTA Introduction The TrustedTM Versatile Field Termination Assembly (VFTA) T8842 is primarily designed to act as the main interface between field devices associated with the detection and suppression of fire and gas TM hazards, and the Trusted TMR Zone Interface Module T8448. It is also used as the interface for the TM Trusted TMR Valve Monitor Module T8449, for which digital outputs to solenoid valves alternate with valve position analogue inputs.
TrustedTM Versatile FTA T8842 Issue Record Issue Number Date Revised by Technical Check Authorised by Modification 5 Sep 05 J W Clark 6 Aug 06 N Owens I Vince P Stock Corrections 7 Sep 07 N Owens I Vince P Stock Fire input advice 8 Aug 12 N Owens Format Correction to fig10; switches reversed Issue 8 Aug 12 PD-T8842 2
TrustedTM Versatile FTA T8842 Figure 1 T8842 Layout Issue 8 Aug 12 PD-T8842 3
TrustedTM Versatile FTA T8842 Table of Contents 1. Description ...................................................................................................................................8 1.1. Digital Inputs (Powered).............................................................................................................10 1.2. Digital Inputs (Line Monitored) ...................................................................................................11 1.3. Digital Output ........
TrustedTM Versatile FTA T8842 Figures Figure 1 T8842 Layout..............................................................................................................................3 Figure 2 Layout for single channel showing all components ....................................................................8 Figure 3 Power Group Configuration ........................................................................................................9 Figure 4 Digital Inputs (with power) ..................
TrustedTM Versatile FTA T8842 Notice The content of this document is confidential to ICS Triplex Technology Ltd. companies and their partners. It may not be given away, lent, resold, hired out or made available to a third party for any purpose without the written consent of ICS Triplex Technology Ltd. This document contains proprietary information that is protected by copyright. All rights are reserved.
TrustedTM Versatile FTA T8842 Revision and Updating Policy All new and revised information pertinent to this document shall be issued by ICS Triplex Technology Ltd. and shall be incorporated into this document in accordance with the enclosed instructions. The change is to be recorded on the Amendment Record of this document.
TrustedTM Versatile FTA T8842 1. Description The TrustedTM Versatile FTA T8842 provides termination for a maximum of 40 input or output channels from various types of field devices. The input signals may be analogue (0-20mA) or digital, whilst output signals are digital only with the T8448 Zone Interface Module. However, the Versatile FTA T8842 may be used with the T8480 Analogue Output module using the Digital Output configuration shown in this document.
TrustedTM Versatile FTA T8842 Figure 3 Power Group Configuration The diagram above shows the full wiring for one power group of eight channels. This circuit is repeated for each of the five power groups. In the diagram, odd-numbered resistors are precision 250 ohms and even numbered resistors are power 250 ohms. Links E and F cannot be fitted simultaneously, and links C and D cannot be fitted simultaneously.
TrustedTM Versatile FTA T8842 Digital Inputs (Powered) Figure 4 shows a channel configured to accept digital input signals from the field from devices which require power from the loop, e.g. fire input devices.
TrustedTM Versatile FTA T8842 Digital Inputs (Line Monitored) Figure 5 shows a channel configured to accept line monitored digital input signals.
TrustedTM Versatile FTA T8842 Digital Output Figure 6 shows the configuration required to provide digital outputs to the field. 1 Field Power TBFPn 3 4 Channel 1 2 Signal TBGn F 2 Precision Resistor B Fuse Field Power A Signal 2 2A E 3 0V D 1 Power Resistor Field Terminals TBn 0V C m Figure 6 Digital Outputs Powered digital outputs to the field may be provided by fitting a 2A fuse in fuse position A, acting as circuit protection.
TrustedTM Versatile FTA T8842 Analogue inputs (4-20mA) Figure 7 below shows the configurations required to accept input signals from current sourcing analogue field devices.
TrustedTM Versatile FTA T8842 Fire Input Loops Figure 8 below shows the configuration required to accept input signals from fire input loops. This configuration may be used for both I.S. and non-I.S. applications. 1 Field Power TBFPn 2 3 4 Channel 1 2 Signal TBGn Precision Resistor F B Fuse Field Power A Signal 2 315 mA E 1 3 0V Power Resistor D Field Terminals TBn 0V C 2A m Figure 8 Fire Inputs Latching fire detectors are reset by the removal of field power.
TrustedTM Versatile FTA T8842 Monitored Valve Outputs For a TrustedTM TMR Valve Monitor Module T8449, an output configuration as shown in Figure 6 is required to drive the safety valve. The valve position is monitored by the next channel configured as an input. This input may be an analogue position sensor, which is wired as shown in Figure 7. This input expects a 4-20mA current loop from the position sensor. It may also be wired from a set of limit switches arranged in a resistor network.
TrustedTM Versatile FTA T8842 2. Installation The TrustedTM Versatile FTA 8842 is designed to be mounted on either of the TS32 or TS35 DIN rails in the horizontal or vertical positions as required. 3. Associated Cable Selection Note that 24V field power is required even if all channels are configured as inputs. This may be connected via the plug at the chassis end of the cable to a T8290 or T8297 distribution unit (for cables without power wires) or at the VFTA (for integral power cables).
TrustedTM Versatile FTA T8842 TBFP1 to TBFP5 Connections The pin connections of TBFP1 to TBFP5 are identical and are detailed below: Pin Service 1 24V-1 2 0V 3 0V 4 24V-2 Table 1 TBFP1 to TBFP5 Connections Note that the 0V for each group are interconnected on the VFTA.
TrustedTM Versatile FTA T8842 TBG2 Connections Pin Service 1 0V 2 Channel 9 3 Channel 10 4 Channel 11 5 Channel 12 6 Channel 13 7 Channel 14 8 Channel 15 9 Channel 16 10 0V (Not used) Table 3 TBG2 Connections TBG3 Connections Pin Service 1 0V 2 Channel 17 3 Channel 18 4 Channel 19 5 Channel 20 6 Channel 21 7 Channel 22 8 Channel 23 9 Channel 24 10 0V (Not used) Table 4 TBG3 Connections Issue 8 Aug 12 PD-T8842 18
TrustedTM Versatile FTA T8842 TBG4 Connections Pin Service 1 0V 2 Channel 25 3 Channel 26 4 Channel 27 5 Channel 28 6 Channel 29 7 Channel 30 8 Channel 31 9 Channel 32 10 0V (Not used) Table 5 TBG4 Connections TBG5 Connections Pin Service 1 0V 2 Channel 33 3 Channel 34 4 Channel 35 5 Channel 36 6 Channel 37 7 Channel 38 8 Channel 39 9 Channel 40 10 0V (Not used) Table 6 TBG5 Connections Issue 8 Aug 12 PD-T8842 19
TrustedTM Versatile FTA T8842 TBSS Connections Pin Service 1 Auxiliary Input (Not used) 2 Auxiliary Input (Not used) 3 Smart Slot A (Not used) 4 Smart Slot B (Not used) 5 Smart Slot C (Not used) 6 Channel 41 7 Channel 0 Table 7 TBSS Connections TB1 to TB40 Connections The pin connections of TB1 to TB40 are identical and are detailed below: Pin Service 1 Field power 2 Signal in 3 0V Table 8 TB1 to TB40 Connections Issue 8 Aug 12 PD-T8842 20
TrustedTM Versatile FTA T8842 Links Links 1 to 6 are not used in this configuration and should be fitted in position B or removed. Links 1 to 5 wire power from each group to the unused TBSS terminals 2 and 7. Link 6 wires TBSS terminals 1 and 6 to zero volts. SmartSlot operation is no longer performed on the VFTA and therefore the links should not be fitted. Each channel has a set of links to configure the conditioning circuit, as referenced on the previous pages. These are detailed below.
TrustedTM Versatile FTA T8842 5. Specifications Voltage Range (Field Supply) 18 to 28Vdc Fuses 40-off 2A plug-in TE-5 series, ICS part number 813409 40-off 315mA plug-in TE-5 series, ICS part number 813407 40-off 50mA plug-in TE-5 series, ICS part number 813405 Maximum Current (Field Supply) 2.
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