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Summary of Contents for Lathem LTR-RSS
- Page 1 LTR-RSS REMOTE SCHEDULE SELECTOR and BELL RINGER Installation & User’s Guide...
- Page 2 THIS EQUIPMENT COMPLIES WITH FCC CLASS-B REQUIREMENTS PURSUANT SUBPART J OF PART-15 This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.
- Page 3 OPERATION, INSTALLATION AND MAINTENANCE MANUAL “REMOTE SCHEDULE SELECTOR” “BELL RINGER” LATHEM TIME CORP Doc #USG0026B “LTR8-512, LTR-RSS and “MasterLink” are Registered Trademarks of Lathem Time Corp., Atlanta, GA, USA ©2004 LATHEM TIME CORP...
- Page 4 (8) possible schedules stored in the Master or deactivate all schedules. Your selection remains in effect until you make another schedule change (at the LTR-RSS, the MasterLink Software or the Master itself) or when a programmed schedule change occurs.
- Page 5 (typically Cat-3) low-voltage cable to the Master’s RS-485 port, while the other two screws connect continuous 9-24V AC/DC power to the unit. LTR-RSS User’s Guide Circuit Board 1 2 3 4 5 6 7 8...
- Page 6 LTR-RSS User’s Guide On the face of the cover plate, you will see a 10-position knob (to select which schedule you want active), a button to send your changes to the Master, and status lights which confirm that your changes occurred.
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Page 7: Specifications
Specifications Power Input: LTR-RSS User’s Guide 9-24V AC/DC, 1W max. For cable between the LTR-RSS and LTR8-512 less than 100 ft, power can be drawn from the 12V output on the LTR8-512’s I/O connector. For longer cable, power should be drawn from a bell transformer or Lathem 24V power supply (typically a PS8-24). - Page 8 Communications: EIA / IEEE RS-485 half-duplex requiring Terminal Block: LTR-RSS User’s Guide single twisted-pair (UTP or STP) communications cable (typically CAT-3 or CAT-5). Max length 4000 ft. Can be included on LTR8-512’s RS-485 Host Communications Bus, along with other Lathem RS-485 devices...
- Page 9 Mechanical: Environmental: LTR-RSS User’s Guide Circuit board is mounted to an industry- standard double-gang switch plate. Plate is screwed into standard double-gang flush-mount electrical box (typically Wire-Mold Part # V5747-2, not included). Connection of cables between electrical box and LTR8-512 or power source...
- Page 10 Installing the LTR-RSS To install the Remote Schedule Selector/Bell Ringer, • Remove the LTR-RSS from its package and locate the dip switches (bottom center) on the back of the circuit board. • Set the dip switches to match the Master’s address (default = 65) and baud rate.
- Page 11 • Locate the terminal block on the back of the circuit board (upper left). Attach the communication cable wire-pair (with proper polarity) to the top two screws on the terminal block. The top screw is Data - and the next one down is Data + . LTR-RSS User’s Guide...
- Page 12 The LTR-RSS requires a voltage source of 9 to 24 volts, AC or DC. If the distance between the LTR8-512 Master and the LTR-RSS is less than 100ft, you can use a 2nd twisted-pair in the cable to bring power from the Master Terminals # 12 and 13 (on the rear of the Master's Display Panel, providing 12vAC at 250mA).
- Page 13 LTR-RSS User’s Guide Wiring Diagram...
- Page 14 RS-485 Cable Power Cable 9-24 VAC LTR-RSS User’s Guide Install Diagram Cable Plug...
- Page 15 When you make a schedule change, this change remains in effect until you make another change or when a programmed schedule change occurs. You can make schedule changes at the LTR-RSS, the MasterLink software or the Master itself. To deactivate all schedules: •...
- Page 16 The indicator (LED) will light to show which schedule is now active. The LED stays lit for five (5) seconds then turns off to conserve power. • All schedules other than the one you chose are now deactivated. LTR-RSS User’s Guide...
- Page 17 Push the ENTER SELECTION button. All bell circuits will become active and will remain active for as long as you press the ENTER SELECTION button. Note: The bell circuits could remain active up to 2 seconds after releasing the ENTER SELECTION button. LTR-RSS User’s Guide...
- Page 18 Lathem or from an authorized Lathem reseller. The conditions of this warranty and the extent of the responsibility of Lathem Time Corporation (“Lathem”) under this warranty are listed below.
- Page 19 No warranties are given with respect to products purchased other than from Lathem or an authorized Lathem reseller and any such products are purchased "as is, with all faults." In no event will Lathem be liable for any direct, indirect,...
- Page 20 Lathem Time 200 Selig Drive, SW, Atlanta, GA 30336 404-691-0405 www.lathem.com Copyright © 2004 Lathem Time Corporation. All rights reserved.
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