Link electronic Portable Generator PCA 819 User Manual

A PRODUCT OF THE GENFLEX SYSTEM  
LINK ELECTRONICS, INC.  
ALARM FOR MASTER SYNC GENERATORS  
MODEL PCA-819  
MADE IN THE USA  
FEATURES  
Alarm Condition of SPG  
Audible Tone  
Disable Alarm  
Connects to PCO-818  
Contact Closure  
120 or 240 AC Operation  
The PCA-819 Remote Changeover Alarm is an  
add-on enhancement to the PCO-818 changeover  
system. The PCA-819 is engineered to provide a  
convenient, and easy to use means of monitoring  
changeover, due to loss of signal, at a remote  
location.  
The PCA-819 has two Digital inputs, Gen A and  
Gen B. These signals are input on TB1 located on  
the rear panel. A three-wire cable connects TB1 to  
J3 on the rear of the PCO-818 frame. These  
signals are active high, TTL level. Input A and/or  
B
can be disabled by their respective  
enable/disable switch on the front panel. The  
inputs are filtered for noise and clipped at 5.1V for  
transient protection. Bi-color LED’s indicate an  
RED alarm condition , GREEN condition OK, and  
BLINKING GREEN unit has been disabled.  
Bi-color LED’s provide a visual indication of the  
Changeover Frame status.  
Additionally, an  
audible alarm sounds to indicate an alarm  
condition. And to provide even more flexibility,  
isolated relay contacts, both normally open, and  
normally closed, are provided so the user can  
control other equipment or alarms in the event of  
a loss of signal at the Changeover Frame. Front  
panel switches allow the user to disable the alarm  
signal from either, or both, generator banks, and  
also mute the audible alarm.  
A circuit detects if either or both inputs, Gen A or  
Gen B, has a failure, the speaker sounds off and  
the relay is energized. The speaker is a self-  
generating audible indicator and may be muted by  
by front panel switches. The alarm output relay  
provides both Normally Open and Normally  
Closed contacts, capable of switching up to 5  
amps at 120VAC or 30VDC. Varistors and a fuse  
protect the contacts the relay from transient spikes  
and overloads.  
The PCA-819 is housed in a rugged 1RU rack-  
mount enclosure, and can be powered from 120 or  
240VAC (internal jumper selectable).  
Whenever a loss of signal occurs on any of the  
various changeover modules in the PCO-818, an  
alarm signal is generated and the PCA-819 shows  
the alarm condition on the front panel.  
The PCA-819 is powered from the AC line, with  
the option of either 120V or 240V, by changing the  
appropriate jumpers at JP1, JP2, and JP3.  
LINK  
ELECTRONICS, INC. 2137 Rust Avenue Cape Girardeau, MO 63703-7668  
Phone 573 334 4433 FAX 573 334 9255  
 

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