Triguard SC300E
MDO16FNS
16-Channel Digital Output Module
120Vac/dc
(MDO16FNS
Issue 4
INTRODUCTION
PURPOSE
The 120Vac/dc Digital Output Module MDO16FNS provides the output control interface
between the SC300E processing environment and up to 16 high-voltage field items. All field
outputs from the module are galvanically isolated from the system.
October 2005
)
Circuit triplication and voting procedures make the module single-fault tolerant and latent
testing ensures that the failure of a normally ‘ON’ (energised) or ‘OFF’ channel will be
recognised and reported to the system. Front panel indicators show the state of all channels,
the circuit ‘on-line’ status and the health of the module.
The module, which is compatible with ‘dual slot hot repair’, can be fitted in any of the ten I
slots in the SC300E chassis. ‘wrong slotting’ is prevented by physical coding. The SC300E
MPP software 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 ch
backplane.
The MDO16FNS has relatively high power dissipation which may place some constraints upon
its use.
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
/O
assis
Reference No
008-5097
008-5128
Title
Chassis User Manual
TDO16AIB 16 Termination Card User Manual DIN to Screw
008-5148
Channel Digital Output
2
MDO16FN
S
October
2005–
Issue 4
Triguard
SC300E
Terminals, Internally Powered, High Voltage
User Manual
Mechanical
block (Upper)
coding
Connector J1
Common
Module
Connector J2
Interface
(CI)
Fig
ure 1-1 General view and front panel detail
Connector J3
Protective
Mechanical
block (Lower)
Cover
coding
MDO16FN
S
October
2005–
Issue 4
3
Triguard
SPECIFICATION
Model
SC300E MDO16FNS 16-Channel D/O Module 120Vac/dc
MDO16FNS
Channels
Architecture
Indicators:
Outp ut d river FET
Voltage range
Voltage drop
Maximum d
Surge limiting
Isolation
Module power consumption excluding field
power dissipation in module
Module power consumption including field
power dissipation in module
Overall size (mm)
Overall size (inches)
Input
Modules
rive
16
TMR
One per point
Health, 3 x On Line
99 to 132Vac/dc
Less than 4V
Resistive load: 0.50A per channel
Tungsten load: 0.125A per channel
3A peak
1kVdc field to system, commoned supply
12mA (24mA if dual slot hot repair)
4W
2W @ minimum load
36W @ maximum load
400(9U)H x 397L x 28W
15.75H x 15.63L x 1.1W
Weight
ENVIRONMENTAL SPECIF
The maximum ambient temperature measured at the hottest point within the Triguard system
shall
Temperature operating:
Temperature
Humidity
EMC/RFI Immunity
Vibration/Shock
Certification:
General Certification: Ref. SC300E TMR Product Guide (ref 008-5209).
ICATIONS
not be greater than 60 degrees centigrade.
storage:
+5°C to +60°C
-
25°C to +70°C
5% to 95% non-condensing at ambient <40°C
Tested and certified to IEC 1131-Part 2 1994
Tested and certified to IEC 1131-Part 2 1994
2.1kg
4
MDO16FN
S
October
2005–
Issue 4
Triguard
SC300E
TRANSPORT AND HANDLING
The MDO16FNS must be transported and stored in its original packing material which should
be retained for this purpose.
MDO16FN
S
October
2005–
Issue 4
5
Triguard
SC300E MDO16FNS 16-Channel D/O Module 120Vac/dc
TECHNICAL DESCRIPTIO
N
PHYSICAL
The MDO16FNS is a 9U high PCB with integral front panel and rear connectors. A plug-in
daughterboard carries the common interface circuits. The board faces are protected by
detachable
the location of the connectors, covers and front panel details.
covers (see Section 3.1, Scope). Figure 1-1 shows the general layout, including
Mechanical coding blocks
All Input/Output modules carry two coder blocks equipped with pins which mate with holes in
corresponding blocks in the chassis and prevent the module being inserted into the wrong slot.
The
pins in the module blocks are factory installed in a pattern determined by the module and
corresponding
holes
are plugged with set screws. The chassis slot coder block configuration for this module
is shown in Figure 2-1.
set screws are removed from the chassis coder blocks to enable fitting. Unused
Figure 2-1 Chassis slot coder blocks configuratio
n
EXTERNAL CONNECTIONS
Field circuits
The field load circuit shown in Figure 2-2 is the typical required for the safe connection of field
loads
to
the MDO16FNS. For any unused channel a dummy field load (value 4.7k ohm) should
be used. We however, recommend the use of their 16-Channel Digital Output Termination
Cards TDO16AIB which offer full connection facilities with indicating fuses, and alarm outputs
(See
Section 1.2, Associated documentation).
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