Triconex 3664 24Vdc Digital Output (Dual)
Email: sales@amikon.cn
Dual Digital Output Module
Dual Digital Output (DDO) modules
receive output signals from the Main
Processors along a single parallel or
series path, and applies a 2-out-of-3
voting process individually to each
switch. The switches produce one
output signal which is then passed to
the field termination. While the quadru-
plicated output circuitry on TMR
modules provides multiple redundancy
for all critical signal paths, dual
circuitry provides just enough redun-
dancy to ensure safe operation. DDO
modules are optimized for those safety-
critical control programs where low
cost is more important than maximum
availability.
DDO modules have a voltage-loopback
circuit which verifies the operation of each output switch independently of the
presence of a load and determines
whether latent faults exist. Failure of
the detected field voltage to match the
commanded state of the output point
activates the LOAD/FUSE alarm indi-
cator.
In addition, ongoing diagnostics are
performed on each channel and circuit
of a DDO module. Failure of any diag-
nostic on any channel activates the
Fault indicator, which in turn activates
the chassis alarm signal. A dual module
operates properly in the presence of
most single faults and may operate
properly with some kinds of multiple
faults, but stuck-Off faults are an
exception. If one of the output switches
has a stuck-Off fault, the output goes to
the Off state and a glitch may occur during switch-over to a hot-spare
module.
DDO modules support hot-spare capa-
bility, which allows online replacement
of a faulty module. Each module is
mechanically keyed to prevent
improper installation in a configured
chassis.
INFORMATION
|
Model Number
|
3664
|
|
Nominal Voltage
|
24 VDC
|
|
Type
|
Dual DO, serial (recommended for de-energize-to-trip control programs)
|
|
Output Signals
|
32, commoned
|
|
Voltage Range
|
16-30 VDC
|
|
Maximum Voltage
|
36 VDC
|
|
Voltage Drop
|
< 1.5 VDC, typical
|
|
Power Module Load
|
< 10 watts
|
|
Current Ratings, Maximum
|
2A per point
10A surge per 10 ms
|
|
Load Leakage
|
2 mA maximum
|
|
Fuses (on Field Termination)
|
n/a—self-protecting
|
|
Point Isolation
|
1,500 VDC minimum
|
|
Color Code
|
Dark blue
|
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Payment：T/T 100% in Advance
Lead Time : 3-5 Days
Minimum Order Quantity : 1 Piece
Warranty : 1 Year
Contact me as soon as possible!
