4427 Dawson Street
Burnaby, B.C., Canada V5C 4B8
Office: 604.502-9007
Fax: 604.502-9044
Web:
www.webbelectronicsinc.com
Document Name: MWP-302 User Manual
1 5 o f 1 7
CONFIDENTIAL, Copyright © 2018
This document is proprietary to Webb Electronics Inc. It may not be copied or otherwise
distributed without the express consent of Webb Electronics Inc.
Remember that if a LS-250 Rescue Station is not being used, each elevator must be programmed with its own unique
station number (Command #6) in order for individual cabs to be called. If the outside caller, for example, presses 2* and
station number 2 hasn’t been pre-programmed with its identification number, all of the units including station #2 will shut
off.
6 WEBBPHONE SPECIFICATIONS
Elevator Wiring Requirements
One shielded pair communication cable. Shield should be grounded at
controller end of traveling cable.
Phone Line Requirements
Standard analog loop starts voice grade telephone line or PBX
AC/DC Transformer (supplied)
120V AC, 60 Hz input
12V DC, 1A output
Maximum number of units
6
sharing the same phone line
On-hook Phone Line Voltage
24V – 55V (nominal 48V DC)
Off-hook Phone Line Voltage
3V – 10V (nominal 6V DC)
On-hook Power Required
0 mA
Off-hook Loop Current
25 mA – 35 mA (nominal 30 mA)
LED
Operating voltage 1.7V – 2.1V
Operating current 10 – 25 mA
Microphone
Omnidirectional back electret condenser Frequency range 20 Hz – 20 kHz
Ringing Voltage
40 – 130V AC
Operational Loop Resistance
600 ohms
Backup Power
3.7V/1000 mAh rechargeable
Li-ion battery.
Replace every 2 years or as required.
Operating Range
0 – 60 degrees Centigrade
Ringer Equivalence (REN)
0.8 USA / 0.22 Canada
Dimensions
4.5” (114 mm) wide x 5.25” (133 mm) high x 1.75” (44 mm) deep with mounting
holes to match the common stud patterns
7 TROUBLESHOOTING
7.1
Voltage Reference
On Hook Voltage:
24V – 55V DC
Off Hook Voltage:
3V – 10V DC
External Power
12 DC (Nominal)
Battery Voltage
4.4V VDC
7.2
WebbPhone is dead. No dial tone when call button is pressed.
Confirm that the green power LED is on (upper left of circuit board).
Press EXIT key (phone maybe in Programming mode).
Check all terminal connections, especially SPEAKER and CALL – wires in snug and
terminals screws tightened.
