Manual

AlphaLinQ™ Visual Nurse Call System • 8
System Operating Principle
Each system uses a series of common conductors to carry the operating and signaling voltage to the various units.
In addition, each station capable of calling the master station has individual conductors between it and the master to
give the station its own identity.
When a call station is activated, switching circuits operate to light various call lights and to energize system call tone.
All calls must be reset at the point of origin.
Emergency calls are signaled by a diff erent fl ashing rate at the master station. An emergency call is indicated by an
intermittent tone and fl ashing lights at approximately 1/3-second intervals. A routine call is indicated by a steady
lamp and an intermittent tone at approximately 8-second intervals.
The AlphaLinQ™ 100 Series Nurse Call System includes three basic units, each essential for operation. These will be
discussed individually and are as follows:
• Power & Control Unit
• Master Station
• Call Stations
The use of these basic units, in conjunction with wiring, housings and auxiliary equipment, make up a complete sys-
tem.
The AC152 & AC153 Power and Control Units
The power & control unit utilizes an SS106 transformer which steps down the 120 VAC input to 24 VAC, 30 VA, which
is then rectifi ed, fi ltered and regulated by the AC152 to provide a stable 24 VDC for the system functions.
Control circuits are provided to detect the presence of routine, emergency and code calls (when used with the AC153
control unit) and to provide steady or intermittent voltages to operate external devices with indications as follows:
Routine calls are indicated by a positive voltage applied to Terminal R by the calling remote station. Emergency calls
are indicated by a positive voltage applied to terminal Q by the calling remote station. Code calls are indicated by a
positive voltage applied to terminal V by the calling remote station (provided by the optional AC153).
AlphaLinQ™ 100 Series Master Station
The Master Station includes:
1. Buzzer for audible signals.
2. LED Annunciator lamps for call indication.
3. Additional operating controls, including TONE OFF switch and additional code, emergency and routine call
indicators.
VPS101, VPS102 and VSS110
The VPS101, VPS102 and VSS110 Call Stations are for routine calls that use an LED visual indicator.
The EPS155, EPS337 and EPS339 Emergency Stations and
The EPS156 Code Call Station
The EPS155 Toilet Emergency Station, and the EPS337 Water resistant Shower Emergency Stations are for emergency
calls. In the emergency position, associated signal lights are disconnected from the normal signal terminals and con-
nected to the emergency signal terminals. The EPS339 Push-Button Emergency Station, EPS156 Code Call Stations
have diff erent features, but function in a similar manner.