Page 2 - Lathem Time Corporation; Copyright © 2008 Lathem Time Corporation.
Lathem Time Corporation 200 Selig Drive, SW Atlanta, GA 30336 1-800-241-4990 1-404-691-0400 www.lathem.com Document No. OMSC-0708 Copyright © 2008 Lathem Time Corporation. All rights reserved.
Page 3 - TABLE OF CONTENTS
TABLE OF CONTENTS SPECIFICATIONS..................................................... 1 INTRODUCTION ....................................................... 2 QUICK START STEPS .............................................. 3 DIP SWITCH SETTINGS........................................... 8 PROGRAMMI...
Page 4 - SPECIFICATIONS; WARNING
Page 1 SPECIFICATIONS Input Voltage 115 VAC (220 Optional) Input Frequency 50/60 Hz Input Power 20 Watts Max Standby Power 1.2 Ah, 6 V battery Standby Time 10 Days Timing Accuracy Per line frequency Number of Events 1440 (any combination of weekdays) Signal Duration Programmable – 1 to 99 secs Dayli...
Page 5 - Page 2; INTRODUCTION
Page 2 INTRODUCTION The DWA-S is a single circuit signaling device which can be used as a bell ringer or on/off controller. It is capable of retaining up to 1440 separate events for each day of the week in memory plus a floating lunch and break schedule which can be activated with a single key on th...
Page 6 - QUICK START STEPS; Step 1 – Mount Unit to Wall
Page 3 QUICK START STEPS Step 1 – Mount Unit to Wall 1. Unscrew 2 left screws to remove left side panel. 2. Slide front panel left. 3. Disconnect cable connector from right side of front panel. 4. Slide front panel left and remove completely. 5. Find a suitable location on the wall that allows at le...
Page 7 - Page 4; Step 2 – Swith Off Power to AC Circuit; SWITCH OFF THE CIRCUIT THAT WILL FEED AC POWER; Step 3 – Connect Wires for 115VAC or 24VAC Bells; There are three options for routing wires into the DW A-S:
Page 4 9. Secure unit to wall using screws (not provided). Step 2 – Swith Off Power to AC Circuit 1. SWITCH OFF THE CIRCUIT THAT WILL FEED AC POWER TO THE UNIT BEFORE PROCEDING. Step 3 – Connect Wires for 115VAC or 24VAC Bells IMPORTANT! This unit is shipped from the factory as a Bell Ringer. To cha...
Page 8 - Step 4 – Turn on Power Switch
Page 5 IMPORTANT: DO NOT PROCEED IF W IRE COLORS ARE DIFFERENT THAN SHOWN OR IF YOU ARE UNSURE WHICH WIRES ARE AC HOT, AC NEUTRAL AND GROUND. THERE IS RISK OF PERSONAL INJURY AND DAMAGE TO THE UNIT THAT’S NOT COVERED BY WARRANTY. INEXPENSIVE TESTERS ARE AVAILABLE AT YOUR LOCAL HOME ELECTRICAL SUPPLY...
Page 11 - Page 8; DIP SWITCH SETTINGS; Disabled
Page 8 DIP SWITCH SETTINGS To access the dip switches, remove the two screws holding the left side panel in place and remove the panel. Dip Switches 1, 2, and 3 are monitored at all times and changes take effect immediately. Dip Switch 4 is read only at power up. To change the setting for this switc...
Page 12 - PROGRAMMING A SECURITY CODE
Page 9 PROGRAMMING A SECURITY CODE Upon power up you are allowed to enter a security code to restrict access to programming functions. W hen the unit displays “ SECURITY CODE ”, press from one to four Day of the Week keys. This is your security code. The ERASE EVENT key can be used to clear the code...
Page 18 - White; WIRING DIAGRAMS
Page 15 MASTER CLOCK - 1 2 3 4 5 10 11 12 13 6 7 8 9 TxD RxD D + D GND GND SYNC D + D - D + D - ~ ~ RS-232 RS-485 SYNC OUT SYNC IN 12V~ AC OUT 250ma MODEM HOST COMMUNICATIONS LTR8-512 & LTR8-512M Only PULSE SYNC RS-485 DATA SYNC + - RS-485 DSD RS-485 DSD + - RS-485 DSD + - RS-485 DSD + - RS-485 ...
Page 20 - OMC – DWA-S INTERCONNECTION
Page 17 FIGURE 4: CONNECTING RC-MS TO SYNCH DWA-S OR LTR-0 NOTE: A 9vDC Power Adapter (not shown) is also required for the RC-MS. FIGURE 5: OMC – DWA-S INTERCONNECTION
Page 23 - LOW VOLTAGE AC BELL WIRING
Page 20 FIGURE 6: 115/220 VAC BELL WIRING FIGURE 7: LOW VOLTAGE AC BELL WIRING
Page 24 - LOW VOLTAGE DC BELL WIRING
Page 21 FIGURE 8: LOW VOLTAGE DC BELL WIRING FIGURE 9: 115/220 VAC CONTROL WIRING
Page 27 - Limited One-Year Limited Warranty
Page 24 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 exten...