Analytic Systems VTC310 Series User manual

VTC310 Series
Voltage Converter
Installation & Operation Manual

1
IMPORTANT SAFETY INSTRUCTIONS
1) SAVE THESE INSTRUCTIONS — This manual contains important safety and operating
instructions for this voltage converter.
2) Do not expose this voltage converter to rain or snow.
3) Use of an attachment not recommended or sold by the voltage converter manufacturer may
result in a risk of fire, electric shock, or injury to persons.
4) Do not disassemble this voltage converter; take it to a qualified serviceman when service or
repair is required. Incorrect reassembly may result in a risk of electric shock or fire.
5) To reduce risk of electric shock, unplug this voltage converter from the outlet before
attempting any maintenance or cleaning. Turning off the controls will not reduce this risk.
GROUNDING AND AC POWER CORD CONNECTION INSTRUCTIONS — The plug must be
plugged into an outlet that is properly installed and grounded in accordance with al local codes and
ordinances.
DANGER — Never alter AC cord or plug provided — if it will not fit outlet, have proper cord
installed by a qualified electrician. Improper connection can result in a risk of an electric shock.
WARNING —Do not use as a battery charger. Only models beginning with ‘BCA’ or ‘BCD’ are
intended for use as battery chargers.
Analytic Systems does not recommend the use of the VTC300 Series Voltage Converters in life
support applications where failure or malfunction of this product can be reasonably expected to cause
failure of the life support device or to significantly affect its safety or effectiveness. Analytic Systems
does not recommend the use of any of its products in direct patient care.
Examples of devices considered to be life support devices are neonatal oxygen analyzers, nerve
stimulators (whether used for anesthesia, pain relief, or other purposes), autotransfusion devices,
blood pumps, defibrillators, arrhythmia detectors and alarms, pacemakers, hemodialysis systems,
peritoneal dialysis systems, neonatal ventilator incubators, ventilators for both adults and infants,
anesthesia ventilators, and infusion pumps as well as any other devices designated as "critical" by the
U.S. FDA.

2
INTRODUCTION
The model VTC310 Voltage Converter supplies 12, 24 or 32 VDC from a 110, 220 or 300 VDC power
source. Other output voltages up to 72 volts are also available by special order. The all-new Current
Mode switching design offers increased power and reliability in a compact package. Extra input and
output filtering reduce EMI to extremely low levels. Reliability features include an input fuse, thermal
shutdown, current limiting and short circuit shutdown with automatic recovery. The output voltage is
easily adjusted 0.5 volts above or below the standard output voltage to accommodate special
requirements.
VTC310-ip-op Specifications
Input Voltages
Nominal (ip) 110 250 300
Actual (Vdc) 100 - 140 230 - 280 280 - 360
Input Amps (max) 4.8 2.1 1.5
Input Fuse MDA-6 MDA-3 MDA-2
Output Voltages
Nominal (op) 12 24 32
Actual (Vdc) 13.6 ±0.05 27.2 ±0.05 36.3 ±0.05
Output Crowbar 16.0 ±0.5 V 32.0 ±1.0 V 42.7 ±2.0 V
Output Amps (cont) 20 10 7.5
Output Amps (max) 25 13 10
General
Noise on Input < 25 milli-Volts
Noise on Output < 25 milli-Volts
Transient Response < 1V for 50% Surge (Output Amps/2)
Efficiency > 85 % @ maximum output
Temp. Range 0 – 40°C @ maximum output
Isolation Input-Output & Input-Case 1500VDC, Output-Case 500VDC
Length 9.1 in / 23.1 cm
Width 7.8 in / 19.8 cm
Height 2.5 in / 6.4 cm
Clearance 1 Inch (2.5 cm) all around
Material Marine Grade Aluminum
Finish Black Powder Epoxy
Fastenings 18-8 Stainless
Weight 4.0 lb / 1.8 kg
designed and manufactured by:
ANALYTIC SYSTEMS WARE (1993) LTD.
#207 12448 82 Ave. Surrey, B.C., V3W 3E9, Canada
phone [phone] fax [phone]
toll free 800-668-3884 US/Canada
email: [e-mail]; web site: www.analyticsystems.com Rev. Apr 2001
Specifications subject to change without notice.

3
INSTALLATION
MOUNTING
Mount the unit in a DRY location. Allow at least 4 inches of clearance around it for adequate cooling.
POWER CONNECTION
The unit is supplied with 3 foot power leads. This should normally be adequate to connect to a
source of power. If you must extend the power leads, be sure to use at least a good quality
(typeTEW) AWG14 wire. The wire colours are
Red - Positive
Black - Negative
All connections should be made inside an appropriate junction box. Refer to the specifications table
for the correct sizing of the circuit breaker in the distribution panel.
A ground stud is provided to bond the chassis to local ground to reduce or eliminate EMI.
OUTPUT CONNECTIONS
Two Positive output terminals and two Negative output terminals are provided. Connect only one wire
to each terminal. Ensure that the total average load connected does not exceed the continuous
current rating of the unit.
LOAD SHARE OPTION
The units may be configured for load sharing if they are equipped with the optional output isolation
diodes. To confirm that your unit has these diodes, use an ohmmeter to measure the resistance
between the two positive output terminals. If the diodes are present the terminals will measure as not
connected. If the diodes are NOT present, the terminals will measure as a short circuit. Assuming
the output isolation diodes are present, connect one 4 foot piece of #14 AWG red wire to each
positive output terminal. Connect all the positive wires to a distribution bus, or connect them together,
and then connect from the common point to the load using the correct gauge of wire for the total
output capability of all the supplies running in parallel. Repeat this process for the negative terminals
using the same gauges of wire, but black in colour. These units should now load share. You can
confirm this by watching the output ammeters. A slight difference is negligible, however, if this is not
the case, you can increase the output voltage of the unit that is reading low using the output adjust
potentiometer.

4
OPERATION
Turn the switch on the top of the unit on to energize the outputs. The green ‘Output On’ indicator
light will glow to indicate the proper operation of the unit.
OUTPUT ADJUSTMENT
The unit has an adjustment potentiometer to allow up to ±0.5V adjustment of the output voltage.
This potentiometer is accessed through a small hole in the top of the voltage converter. As shipped
from the factory, the unit is preset for a voltage of 13.6, 27.2 or 36.0 VDC. If you wish to adjust this
voltage, remove the cover plate (secured by 2 screws) to expose the Output Adjust potentiometer.
Reach in with a very small flat blade screwdriver to rotate the potentiometer. Clockwise increases the
output voltage and counter clockwise decreases it. When you are done, replace the cover plate and
securely tighten the screws.
TROUBLE SHOOTING
This unit provides LED indicators and a buzzer to help diagnose any problems. The unit should
sound the buzzer to alert you prior to shutting itself down. You should immediately check the
indicators to determine the cause of the shutdown.
• LOW OUTPUT Indicates that the output voltage is below normal because:
• The current demanded by the devices connected to the unit exceeds the
maximum output current rating, thereby causing the output voltage to drop
to maintain the current at the maximum level,
• The input voltage is not high enough for unit to operate,
• LOW INPUT Indicates that the input voltage is below normal because:
• The input voltage is not in the correct range for proper operation of the unit.
• OVERHEAT Indicates that the voltage converter is running too hot because:
• Too much power is being drawn, turn off or unplug some devices.
• The voltage converter is located in a poorly ventilated area.
If the load exceeds the continuous rating for too long a period, the temperature sensor inside the unit
will turn off the outputs. After the unit cools sufficiently, it will automatically come back on. If this
happens frequently, remount the unit for increased airflow so it cools better.

5
Dry Contact Relay
To use your dry contact output fail relay you must connect a 9-pin D connector to the unit. You must
use pins one and six as is indicated on page 6 in the remote connector diagram.
The relay is factory preset to fail in the closed position when the low output LED and buzzer
come on. If you wish to have the relay fail in the open position when the low output LED and
buzzer come on, you must take the cover off the unit and move the jumper to the other
position on J7. J7 is located next to the relay.
To change the position of the jumper, first turn the unit off and disconnect the unit from both the
power and batteries. Next, turn the unit on for 30 seconds to discharge the capacitors, then turn it off
again. Turn the unit upside down and remove the four screws. Remove the cover and locate J7. It
will be next to the relay as is shown in the above diagram. Simply move the jumper to the desired
position as is shown in the above diagram. Replace the cover and re-install the four screws.
Reconnect the unit to the power and batteries.

6
REMOTE CONNECTOR
This connector is located on the side of the unit.
Note: All switches are electronic (solid state) not mechanical relays.
REMOTE CONTROL (OPTIONAL)
A remote control panel may be connected to the voltage converter
using a 9-pin D-connector that attaches to the side of the voltage
converter. The remote control panel and D connector are part of the
remote control option. The remote control panel allows the unit to be
operated remotely as well as duplicating all the diagnostic indicators
and audible alarm.

7
Limited Warranty
1. The equipment manufactured by Analytic Systems Ware (1993) Ltd. (the “Warrantor”) is
warranted to be free from defects in workmanship and materials under normal use and
service. This warranty is in effect for 3 years from the date of purchase by the user (the
“Purchaser”).
2. In case any part of the equipment proves to be defective, the Purchaser should do the
following:
a) Prepare a written statement of the nature of the defect to the best of the Purchasers
knowledge, and include the date of purchase, the place of purchase, and the
Purchasers name, address and telephone number.
b) Call Analytic Systems at 1-800-668-3884 or 604-543-7378 and request a return
material authorization number (RMA).
c) Return the defective part or unit along with the statement at the Purchasers expense to
the Warrantor; Analytic Systems Ware (1993) Ltd., #207 12448 82nd Ave., Surrey,
B.C., V3W 3E9, Canada.
3. If upon the Warrantor’s examination the defect proves to be the result of defective material or
workmanship, the equipment will be repaired or replaced at the Warrantor’s option without
charge, and returned to the Purchaser at the Warrantor’s expense.
4. No refund of the purchase price will be granted to the Purchaser, unless the Warrantor is
unable to remedy the defect after having a reasonable number of opportunities to do so.
5. Warranty service shall be performed only by the Warrantor. Any attempt to remedy the defect
by anyone else shall render this warranty void.
6. There shall be no warranty for defects or damages caused by faulty installation or hook-up,
abuse or misuse of the equipment including exposure to excessive heat, salt or fresh water
spray, or water immersion except for equipment specifically stated to be waterproof.
7. No other express warranty is hereby given and there are no warranties which extend beyond
those described herein. This warranty is expressly in lieu of any other expressed or implied
warranties, including any implied warranty of merchantability, fitness for the ordinary purposes
for which such goods are used, or fitness for a particular purpose, or any other obligations on
the part of the Warrantor or its employees and representatives.
8. There shall be no responsibility or liability whatsoever on the part of the Warrantor or its
employees and representatives for injury to any person or persons, or damage to property, or
loss of income or profit, or any other consequential or resulting damage which may be claimed
to have been incurred through the use or sale of the equipment, including any possible failure
of malfunction of the equipment, or part thereof.
9. The Warrantor assumes no liability for incidental or consequential damages of any kind.