User`s guide
2
2841 E. Industrial Drive Springfield, MO 65802-6310 800-641-4282
SCS-1 Install/User's Guide
INSTALLATION CHECKLIST
2.1 Cover Plates
Remove the front plastic cover by twisting the four knobs 90 degrees. Remove the two metal rear cover plates. The
lower rear cover plate attaches to the three flat cables of the convenience panel.
2.2 Earth Ground
Connect the ground lug on the rear side of the modem rack to earth ground. See Section 3.2. A ground lug is provided
on the SCS-1 for this purpose. Use a minimum of 14 gauge wire and ground to a cold water pipe or a ground rod.
Do not ground to electrical conduit or telephone company ground.
2.3 Location of Circuit Boards
Confirm the circuit boards in the modem rack and in the multibus rack are installed in the proper locations. See Section
3.2. Connect the line card flat cables to the processor card ports. See Section 3.4A.
2.4 SCS-208 Power Cord
Connect the SCS-208 Power Cord from J3 of the multibus power supply card to J3 of the transformer card. See
Section 3.8.
2.5 Phone Lines
Connect the RJ11X cables provided with each line card to the phone lines used for alarm receiving. See Section 3.4B.
2.6 AC Power
Connect the wiring for 120 VAC to the transformer card mounted on the rear of the modem rack. See Section 3.7B.
Do not apply AC power yet
. For UL Listed operation, use a UL Listed uninterruptible power supply. The UPS system
must have a secondary power source and provide alarm contacts to indicate when the UPS switches from primary
power to secondary power. Below is a list of UL listed UPS systems that provide the correct alarm contacts.
Best Power Any Series M or
Technology Models F2KVA-B
F3KVA-B
F5KVA-B
Clary Corp. Any Series A-52
Elgar Models UPS253-3B
UPS373-3B
UPS503-3B
La Marche Any Series A-52
Topaz Any Series 82000
Models 84462-01
84864-01
84126-01
84130-01
Other UL listed UPS systems that provide alarm contacts to indicate loss of primary power can be used.
2 - INSTALLATION