Valcom 1620ES-24VDC Series User manual

Valcom Failsafe Unit
1620ES-24VDC SERIES
Operation and Maintenance Manual

Table of Contents
Section Title 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. - Specifications………………………………………………….
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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 # [phone]
Fax # [phone]

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3. - Installation Caution !!!
The installation maintenance and operation of this unit should be
performed BY QUALIFIED PERSONNEL ONLY.Valcom, it’s
representatives or affiliates accepts no responsibility for damages
or injuries resulting from the improper installation, maintenance
or operation of its equipment. Personnel responsible for the
installation and operation of this unit must read and understand
this manual fully before proceeding. If you do not understand the installation or operation
procedures of this unit completely STOP, and contact either Valcom or an affiliate for
further instructions. Technicians are available to answer your questions.
Use extreme caution when working inside the Failsafe unit. Insure that all electrical
power has been turned OFF before attempting installation, or maintenance of this
unit.
Never short or bridge the two DC terminals at the Battery, or the DC input
terminals at the Inverter.
DO NOT allow anything to come in contact with 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 Failsafe to earth ground may result in a lethal
electrical shock hazard.
Serious injury to personnel and / or property can result from failure to follow
correct procedures.
Before you proceed with the installation of this Fail-safe unit, ensure that the fuses located inside
the Failsafe unit are OUT; this will prevent an accidental activation of the unit during
installation.
Disconnect all power to the equipment to be controlled by the Failsafe unit, and read the
instructions and connection drawings provided by the actuator manufacturer before proceeding
with the installation.
All the connections between the Failsafe unit and field equipment are provided for by the
customer, unless a specific agreement has been reached with Valcom or its affiliates to provide
such installation.
The Failsafe enclosure may be punched or drilled for conduit attachments on any of the four
sides of the enclosure however the conduit entry point must be at least 3” from the internal back

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panel to allow room for wires to clear all internal components. Do not make connections
through the back of the control box. All connections and conduit hubs must be of the type
which will maintain the correct NEMA rating of your unit.
All connections are to be made directly to the terminal block located inside the Failsafe unit;
these terminals are clearly marked and assigned on the electrical drawings attached to the door.
Make all the connections between the actuators and the Failsafe unit. When connecting the limit
switches be sure that you have selected a set of contacts that will close when the actuator has
reached a FULLY OPENED or FULLY CLOSED position after power failure. Failure to
select the correct set of contacts will prevent the Failsafe unit from automatically disconnecting
after the actuators have reached the failsafe position.
3.1. – AUTO / TIMED UPS shut down
The 1620ES-24VDC series includes an option that allows the system to
be shut down in AUTO or TIMED mode.
AUTO MODE requires that a Limit Switch from the valve actuator be
connected to the 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 J1 and J2 must be moved from pins 1-2
to pins 2-3. Once enabled, the time available for a shut down after a
power failure is selected with the potentiometer P3, the minimum time
is factory set at 4.5 minutes (P3 set fully to the left) and the maximum
possible time to select is of 12.5 minutes (P3 set fully to the right).
Longer times are available and should be requested when ordering.
Regardless of the mode selected, this controller has an LED above P3 that will be ON when the
failsafe has been shut down after a power failure, and it will remain ON until normal power is
restored.
The battery included with this Failsafe unit was sized to operate a specific system for a specific
amount of time. If it is not disconnected from the valve it will fully discharge the battery after
activation.
Ensure that all the electrical connections are made according to the drawings and schematics
provided by the actuator manufacturer. If more than one actuator is to be controlled by the
Failsafe, each one should be connected to the assigned terminal block inside the Failsafe unit.