
The Contact Input supervision will detect an open connection and a
shorted connection as an alarm. The alarm condition is removed only
ovided such that, if the optical power is loss or
the transmitter or receiver dc power is loss, the normally open contact
Diagnostic indicators provide a quick visual indication of system
ntelligent remote monitoring system is
8
CHANNEL
SUPERVISED
CONTACT CLOSURE SYSTEM
8
Channels, Form-C (Normally Open or
Normally Closed) Dry Contact Closure
Diagnos
tics: Power, Optical Presence
and Channel Indicators
High Density
Adapto
External
Specifications:
Contact Input:
-
Supervised
-
Requires 1Kohm Series resistor near the
remote contact
-A Contact State is determined to be open
(off) when
input differs from a predetermined range
-
A Contact State is determined to be closed
(on) when
input falls within a predetermined range
-
If the MT/RT-88 loses power or the fiber is
cut
/
disconnected, the MR/RR will open and an alarm condition will be
indicated.
-
If the MR/RR-88 loses power or the fiber is
cut
/
disconnected, the MR-88/RR-88
contacts will open and an alarm condition
will be indicated.
-
TVS Transient Voltage Suppression
(Used on all Contact Inputs)
-
Connector
to Screw Terminal
Contact Output
Contact Closure Rating
40
Response Time
Connector......................DB26 with Adaptor
to Screw Terminal
Optical:
Wavelength
Loss Budget (62.5
Connector...............................................
Temperature (Operating)
-
40°C to +75°C, non-condensing
Power Supply:
Module
Ra
ck Card
Size:
Module
..........................
Rack Card (1 rack slot)............
Product Ordering Information:
MT = Module Transmitter Signal Source
MR =
Module Receiver Signal Receive
RT =
Rack Card Transmitter - Signal Source
RR =
Rac
Example: MT
DB26 Data Connector with
r to scr
ew terminal
Contact Input
External Contact
the voltage at the
the voltage at the MT/RT-88
.....................
:
Volt DC or Peak AC Per Channel
...................................
.....................................
/125µ)
12 VDC (AFI Part # PS-12D)
AFI SR 20/2
k Card Receiver Signal Receive
-88 to RR
Supervision
Closure
MT/RT-88
DB26 with Adaptor
..............
...................12
8
1/8
x 4
-88
88 contacts
0.5A Max.
1/8
6½
Diodes
5 ms
1310nm
dB
ST
x 1
1/
8
x 5
x1
88
EXTERNAL
SERIES
MULTIMODE
CC
The American Fibertek 88 Series multiplexes 8
supervised input
8 LEDs on the transmitter and the receiver units indica
channel(s)
when the Contact Input voltage falls within a predetermined range.
Failsafe operation is pr
outputs will go
status. The Afinety i
available on the Rack Card product, please consult factory.
Equipment may be ordered as stand alone modules or rack cards
are mounted in the American Fibertek Card Cages: SR-20/2 or SR20R/1
CONTACT
INPUT
Supervised
Channel 1
S
to
status
.
to
MT
or
RT
dry
contact closure on one
.
the alarm
-88
-88
states (
ONE
MULITMODE
FIBER
open).
multimode
MR
-88
or
RR
-88
fiber.
CONTACT
OUTPUT
Channel 1
S
to
10/06/2010