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Valcom Failsafe Unit 

 

 
 
1. - Introduction

  

 

Congratulations on the purchase of the 

Valcom Failsafe unit, Series1620E-24VDC

 this unit 

was designed specifically for your System. Please follow the instructions outlined on these next 
few pages to put your system on line. 
 
In general a UPS (Uninterrupted Power Supply) or Failsafe unit delivers emergency power in the 
event of regular source power failure or interruption.  This Failsafe unit was designed to open or 
close one or more actuators after a power failure, if more than one actuator is to be controlled by 
this system the unit will remain ON until the last controlled actuator has reached the failsafe 
position. 
 
Your Failsafe unit is housed in a NEMA Enclosure, and is shipped with two complete sets of 
drawings one set has been attached to the inside door and an extra set is supplied for your files.  
 
Your Fail-safe unit features sophisticated electronic circuitry. It provides high peak power output 
to start and run devices requiring high current for short duration. This high current is referred to 
as 

locked rotor amperage

. Once interfaced with your system, the unit will operate 

automatically during power failure. 
 
 

2. - Unpacking the Failsafe unit 
 
 

Upon receiving your Failsafe unit, you should check the contents of your package. First inspect 
the shipping container for any indications of mishandling. If there is any evidence of damage to 
the container you should report it to your carrier, a representative of Valcom, or to Valcom 
directly. Next inspect the control cabinet and the internal controls and if anything appears to be 
abnormal or damaged report it at once.  
 
This Failsafe unit was manufactured by: 
 

Valcom div. of Tooling Research Inc. 
81 Diamond St.  
Walpole, MA 02081 
Phone #  (508) 668-5583 
Fax #      (508) 668-5203

 

 

Summary of Contents for 1620ES-24VDC Series

Page 1: ...Valcom Failsafe Unit 1620ES 24VDC SERIES Operation and Maintenance Manual...

Page 2: ...e Page 1 Introduction 2 Unpacking the Failsafe unit 3 Installation 3 1 Auto Timed UPS Shut Down 4 Failsafe Operation 5 Maintenance 5 1 Testing the Batteries 5 2 UPS RESET 6 Electrical Drawings 7 Speci...

Page 3: ...tached to the inside door and an extra set is supplied for your files Your Fail safe unit features sophisticated electronic circuitry It provides high peak power output to start and run devices requir...

Page 4: ...th these terminals during Failsafe operation or during service or installation You must insulate these terminals to help protect against accidental short circuits Failure to properly ground the Failsa...

Page 5: ...he controller for the system to shut down automatically after power failure TIMED MODE should be used only when the valve actuator does not have an available limit switch To enable this option jumpers...

Page 6: ...d as follows 1 Connect the negative wire from the 4 20 ma source to the terminal labeled signal at the actuator 2 Connect the positive wire from the 4 20 ma source to one of the terminals labeled MOD...

Page 7: ...resume normal operation If an OPEN CLOSE switch has been interfaced between the Failsafe unit and the actuator ensure that the actuator will go to the failsafe mode open or close regardless of the po...

Page 8: ...es are an indication of a fault in the system or its connections Such as short circuits overloads etc Locate the source of the problem before replacing the fuse The Failsafe unit operates at high effi...

Page 9: ...orm a test with a battery load tester 5 2 UPS RESET You may connect a momentary switch to the UPS RESET TB3 terminal block this will restore additional time of emergency power to the valve This featur...

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