LTR-RSS REMOTE SCHEDULE SELECTOR and BELL RINGER Installation & User’s Guide
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.
OPERATION, INSTALLATION AND MAINTENANCE MANUAL “REMOTE SCHEDULE SELECTOR” and “BELL RINGER” LATHEM TIME CORP Doc #USG0026B “LTR8-512, LTR-RSS and “MasterLink” are Registered Trademarks of Lathem Time Corp.
LTR-RSS User’s Guide Welcome to the LTR-RSS (Remote Schedule Selector/Bell Ringer) The “Remote Schedule Selector/Bell Ringer” for the LTR8512 Master allows you to immediately activate any one (1) of the eight (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.
LTR-RSS User’s Guide block connect a twisted-pair (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 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.
LTR-RSS User’s Guide Specifications Power Input: 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).
LTR-RSS User’s Guide Communications: EIA / IEEE RS-485 half-duplex requiring 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 Terminal Block: 4-screw removable terminal plug supports both power (2-wire) and communications (2-wire) connections.
LTR-RSS User’s Guide Mechanical: Circuit board is mounted to an industrystandard 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 should be through conduit or other means approved by electrical / fire codes for low-voltage wire Environmental: Operation 0°-85°C (32°-185°F); 2060% R.H.
LTR-RSS User’s Guide 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. ON 2400 9600 The legend on the circuit board will help you know which way to slide the dip switches. Use switch 1 to set the Baud Rate. Slide it down to choose 9600 baud (default) and up to select 2400 baud.
LTR-RSS User’s Guide To select the address, use the numbers that add up to equal the number of your Master’s address, then slide those switches down. For example, the default address is 065: switch 2 (value of 64) and switch 8 (value of 1) are down (64+1 = 65). For address 003, slide down switches 7 and 8 (2+1=3). For address 102, slide down switches 2, 3, 6 and 7 (64+32+4+2=102). • Locate the terminal block on the back of the circuit board (upper left).
LTR-RSS User’s Guide • Connect low-voltage power to the lower 2 screws on the terminal block. 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).
LTR-RSS User’s Guide Wiring Diagram 10
LTR-RSS User’s Guide Install Diagram Cable Plug RS-485 Cable Power Cable 9-24 VAC 11
LTR-RSS User’s Guide Using the LTR-RSS 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: • Turn the knob to the ALL OFF position. • Push the ENTER SELECTION button. All LED’s will flash briefly and all schedules are deactivated.
LTR-RSS User’s Guide To activate a schedule: • Turn the knob to choose which schedule you want to activate. • After turning the knob, push the ENTER SELECTION button. • 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 To manually ring all bells: • Turn the knob to the RING BELLS position. • 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.
Limited One-Year Limited Warranty Lathem warrants the hardware products described in this guide against defects in material and workmanship for a period of one year from date of original purchase from 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. 1. 2. 3. 4. 5.
6. 7. 8. 9. its original carton or equivalent, fully insured with shipping charges prepaid. Lathem will not assume any responsibility for any loss or damage incurred in shipping. WARRANTY DISCLAIMER AND LIMITATION OF LIABILITY: Except only the limited express warranty set forth above, the products are sold with no expressed or implied warranties of any kind, and the implied warranties of merchantability and fitness for a particular purpose are hereby expressly disclaimed.
Lathem Time 200 Selig Drive, SW, Atlanta, GA 30336 404-691-0405 www.lathem.com Copyright © 2004 Lathem Time Corporation. All rights reserved.
