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Triguard SC300E
MAO04NND
INTRODUCTION
PURPOSE
The 4-Channel Analogue Output Module MAO04NND (Figure 1-1) provides analogue output
signals.
The module is a rack mounted, 9U high unit that provides the output control interface between
the SC300E processing environment and the user field environment. It has four current loop
output channels. All field outputs are galvanically isolated from the SC300E system but have a
common supply connection.
Circuit triplication and voting procedures make the module single-fault tolerant and latent
testing ensures that the failure of a channel will be recognised and reported to the SC300E
system. Front panel indicators show the state of the circuit 'on-line' status and the health of
the module. Sockets are provided on the front panel for monitoring the outputs.
The module, which is compatible with 'dual slot hot repair', can be fitted in any of the ten I/O
slots in the SC300E chassis. 'Wrong slotting' is prevented by physical coding. The SC300E
system software identifies the module via a built-in hardware identifier.
Channel outputs leave the module via the DIN 41612 'rear plug-up' system on the chassis
backplane. This document is intended to provide a general understanding of the function of the
module sufficient to enable basic maintenance operations to be effected in the field.
ASSOCIATED DOCUMENTATION
Reference No
008-5097
008-5104
008-5201
Analogue Output Module
Chassis User Manual
PDD24 Power Distribution Panel User Manual
TPH44AIC 4-Channel Pulse Input and Analogue Output
Termination Card, User Manual
008-5203
(MAO04NND)
Issue 1 October 2005
Title
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Related Manuals for Rockwell Automation MAO04NND
Summary of Contents for Rockwell Automation MAO04NND
- Page 1 Issue 1 October 2005 INTRODUCTION PURPOSE The 4-Channel Analogue Output Module MAO04NND (Figure 1-1) provides analogue output signals. The module is a rack mounted, 9U high unit that provides the output control interface between the SC300E processing environment and the user field environment. It has four current loop output channels.
- Page 2 Triguard SC300E MAO04NND Octrober 2005 – Issue 1...
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Page 3: Table Of Contents
Triguard SC300E MAO04NND Analogue Output Module Mechanical coding Block (Upper) Links JP1 to JP4 Links LK1 to LK3 Connector J1 Common Interface (CI) Module Connector J2 Connector J3 Mechanical coding block (Lower) Figure 1-1 General view and front panel detail... - Page 4 5% to 95% non-condensing at ambient <40°C EMC/RFI Immunity Tested and certified to IEC 1131-Part 2 1994 Vibration/Shock Tested and certified to IEC 1131-Part 2 1994 Certification: General Certification: Ref. SC300E TMR Product Guide (ref 008-5209). MAO04NND Octrober 2005 – Issue 1...
- Page 5 Triguard SC300E MAO04NND Analogue Output Module MAO04NND October 2005 – Issue 1...
- Page 6 Triguard SC300E TRANSPORT AND HANDLING The MAO04NND must be transported and stored in its original packing material which should be retained for this purpose. MAO04NND Octrober 2005 – Issue 1...
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Page 7: Mechanical Coding Block (Upper)
TECHNICAL DESCRIPTION PHYSICAL The MAO04NND is a 9U high PCB with integral front panel and rear connectors. A plug-in daughterboard carries the common interface circuits. Figure 1-1shows the general layout, including the location of the connectors, covers and configuration links. -
Page 8: Links Jp1 To Jp4
This MAO04NND acts as a slave to the MPP masters, and communication between three MPPs and the MAO04NND takes place over the triplicated 16 bit parallel I/O - MPP buses that run along the chassis mounted backplane. The three I/O - MPP buses are connected via the module’s upper system interface DIN 41612 connector. -
Page 9: Theory Of Operation
Triguard SC300E MAO04NND Analogue Output Module THEORY OF OPERATION The module has four 0-22mA current output channels using a common 24V supply via termination card TPH44AIC. The circuits are triplicated except for the final combining of the analogue output stages into a single voted output. - Page 10 Triguard SC300E Voting operates so that the LFD deviations do not appear on the combined output. If a fault causes health to fail, no further LFD testing is performed. MAO04NND Octrober 2005 – Issue 1...
- Page 11 Triguard SC300E MAO04NND Analogue Output Module Figure 2-2 Analogue output section - Schematic block diagram Analogue outputs Five test-sockets are provided for monitoring the output lines: one common terminal via 2.2k ohm to the +24V field supply, and the other four via 10k ohm to the current-determining resistors on the termination card.
- Page 12 MPPs which may then grant the request. The watchdog on each microcontroller extinguishes the Health LED on the I/O module front panel in the event of a microcontroller failure, LFD failure or a voting discrepancy. MAO04NND Octrober 2005 – Issue 1...
- Page 13 Triguard SC300E MAO04NND Analogue Output Module Figure 2-3 Common interface - Block diagram MAO04NND October 2005 – Issue 1...
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Page 14: Connector J1
The J2 connectors that are reserved for future use are shown in Table 2-2. Table 2-2. Connections reserved for future use Channel DIN41612 Connector J2 Under-range Over-range logic input logic input J2-2a J2-2c J2-4a J2-4c J2-6a J2-6c J2-8a J2-8c J2-1a : System 0V MAO04NND Octrober 2005 – Issue 1... - Page 15 Triguard SC300E MAO04NND Analogue Output Module SERVICING SCOPE Repair is by module replacement. Faulty modules are not repairable in the field. They should be replaced by new modules and returned for repair. CAUTION 1 Before fitting a new module ensure that the setting of all links is the same as that on the old module.
- Page 16 The levers should then be used to draw the module into position, some resistance will be felt as the rear connector pins engage. The module should be fixed in position with the securing screws. MAO04NND Octrober 2005 – Issue 1...
- Page 17 Triguard SC300E MAO04NND Analogue Output Module Operate the On/Off Line Request switch on the new module. Ascertain that the three On Line LEDs on the new module illuminate for one second, extinguish for one second and then illuminate permanently as the LEDs on the old module extinguish. This sequence indicates that the new module has been put on line and the old module taken off line.
- Page 18 Triguard SC300E SERVICE SUPPORT SPARES Spare parts and technical advice can be obtained from your local area offices. MAO04NND Octrober 2005 – Issue 1...
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