Lathem LTR-512 - Manual (Page 54)

LTRx-512 Installer’s Guide
Connecting the LTR-RSS
50
APPENDIX F – Connecting the LTR-RSS Remote Schedule Selector
The “Remote Schedule Selector” is an accessory for the LTR8-512 Master Controller and allows an
Operator to select one (1) of the eight (8) possible schedules stored in the Master Controller [or No
Schedule] for immediate activation. The selection made will remain in effect until either an alternate
selection is made (at the Master’s KeyPad, via MasterLink Software or through the Remote Schedule
Selector) or a Programmed Schedule Change occurs.
The Assembly of the Remote Schedule Selector consists of an Electronic Circuit suspended beneath a
cover plate for a double-gang switch-type electrical box (not supplied with the product). The Circuit
includes a low-power MicroProcessor, a method of selecting the ‘Address’ of the Master to be remotely
controlled, and a 4-screw Terminal Block for Installer Interconnect. Two screws of the Terminal Block
are for attachment of the Twisted-Pair (Cat-3 typical) low-voltage Network Communications Cable to
the Master’s RS-485 Port. The other two screws are to be used for supplying 9-24V AC/DC as
continuous power source to the unit.
On the face of the the cover plate are a 10-position Rotary Switch (to select the Schedule to be made
‘Active’), a Push Button to send the Command to the Master, and an array of lighting Status Indicators
by which the Operator can receive confirmation from the Master that the Change Schedule Command
has been accepted and acted upon.
CIRCUIT BOARD
LAYOUT
1 2 3 4 5 6 7 8
B
A
U 64 32 16 8 4 2 1
D-
D+
~
~
MASTER CONTROL REMOTE SCHEDULE
SELECTOR
COVER PLATE FOR DOUBLE-GANG
WALL BOX