SEC America 600HS Series User manual

SEC
SEC America Corp
www.secamerica.com
USER MANUAL
600HS Series
DC-DC Converters
Applies to Models:
618HS 638HS
628HS 652HS
July 10, 2019

TABLE OF CONTENTS
page
I Introduction 1
II Installation 1
2.1 Mounting 1
2.2 Connections 1
2.3 Mechanical Drawing 2
III Remote Sense Regulation 2
IV User Adjustments 3
IV Warranty 4
V Electrical Specifications 5-8

I Introduction
After removing the unit from its packaging and ensuring that it has suffered no damage in shipment, it
is important to read this manual and follow its instructions to ensure proper connection and mounting.
600HS Series models are fully isolated dc-dc converters capable of delivering up to 450 Watts in
extreme ambient temperatures and adverse operating conditions. See specification sheets at the end
of this manual for the ratings of a particular model.
II Installation
2.1 Mounting
The converters are designed to be mounted to flat metal surfaces offering optimum heat transfer from
the converter base in environments where air flow may be restricted. For best results, thermal
transfer compound is a recommended interface between the converter and mounting surface. The [4]
mounting slots in the flanges will accommodate mounting hardware up to ¼ inch diameter. (See
figure #2 for mounting centers)
2.2 Connections
The Input/Output connector on the converter is shown in Figure 1
with designated pin functions.
Input/Output Connector
A - Output Positive Sense
B - No Connection
C - Output Negative Sense
D - Input Positive
Canon 3102E24-11PB
Pin
ABC
DEF
GHI
E - Housing Ground
F - Input Negative
G - Output Positive
H - Remote Turn On/Off
I - Output Negative
Front View
key
Figure 1 Figure 1A
Pins Maximum Wire Sizes
D,E,F #8
Others #12
An option for users who wish to purchase a manufactured cable assembly is P/N 68-0749-6 which is
6 feet long and is a standard SEC part.
Cable side mating connector
Canon P/N 3106E24-11SB
Page 1

III Regulation With Remote Sense
+Vo
+S
-Vo
-S
HS
DC-DC
Converter Load
+
-
twisted pair
Figure 3
G
A
C
I
Pin
The HS Series provides regulated outputs at the output terminals. When there is a large current and/or the
output cable is of some length, the voltage at the end of the cable may be noticeably lower than at the
terminals. The converter can compensate up to 0.75V of voltage drop through remote sense terminals. To
ensure accurate regulation, users should run two separate wires (twisted from the desired regulation points to
the remote sense terminals. Even if the load current is low, users should still connect +Vo to +S and –Vo to –S.
Figure 2
Page 2
All dimensions are in inches

IV User Adjustments
Series 600HS units are gasket-sealed. Changes or adjustments to the operating modes of any unit
are accomplished internally:
1) To gain access, (Disconnect power from the unit before opening) remove the 5 outer black
hexagonal head screws retaining the connector plate as shown in Figure #4. Then remove the
4 screws surrounding the connector. This will enable the removal of the front panel.
2) After removing the screws, lift the panel to expose the internal components as shown. Figure
#5 shows the adjustments and their locations
With P/N ATC 30
Replace Fuses
ATC 30
123
jumper 2,3 - Unit ON
jumper 1,2 - ON by Remote Pin
Output Voltage
Adjustment jumper
P1 CON1 F1,2
Figure 5
Accessible Adjustments:
A) Output voltage is trimmed by adjusting the potentiometer P1.
B) Remote “Turn On” Disabled:Units are shipped from factory with pins 2 and 3 of the
connector [CON1] jumpered as shown. This programs the unit to be “ON” when source power
is applied.
C) Remote “Turn On” Enabled: To program the unit for remote enable, shift the jumper from
pin positions 2 and 3 of [CON1] to positions 1 and 2. In this mode the unit will energize when
pin H is connected to the negative input line pin F.
Page 3
Figure 4

D) Fuse Replacement: In the unlikely event that fuses F1,2 will open, disabling the unit, DO NOT
CHANGE FUSES WITH THE POWER APPLIED. In order to restore normal operation, the
user will need to ensure that the cause of the failure has been removed. Then the blown fuses
need to be removed by gently prying them out of their clips and replacing them with ones of
identical ratings. Notwithstanding the above the user should take every precaution to ensure
that a reversed polarity input is avoided. Any polarity reversals may result in permanent
damage.
3) Restore the front plate to its original position by replacing the (4) connector securing screws
and then the (5) front plate hex head screws making sure the gasket is compressed.
IV Warranty and Repair
Should your investigations indicate that your product is defective or damaged and the unit is still
under warranty, contact your dealer (purchase point of origin) and obtain a return merchandise
authorization (RMA number) for corrective action.
If the warranty period has expired or if the warranty has been violated due to operator error or misuse
call: SEC America Corp. 802-865-8388 to receive an authorization for return for an assessment and
possible repair.
Warranty
600HS Series models come with a 2-year factory warranty covering parts and labor per the
following:
We warrant each instrument, sold by us, or our authorized agents, to be
free from defects in material and workmanship and that it will perform
within applicable specifications fora period of two year afteroriginal
shipment. Our obligation under this guarantee islimited to repairing or
replacing any instrument or any part thereof,except fusesand pilot lights,
which shall within one year after delivery to the original purchaser, be
returned to us with transportation chargesprepaid, prove afterourexa-
mination to be thusdefective.
LIMITED WARRANTY
The above limited warranties take the place of allother warranties,
expressed or implied, and correction of such defects by replacement or
repair shall constitute a fulfillment of all obligationsunderthe terms of the
warranties. The warranties do not cover any unit that has been damaged
either in transit or by misuse, accident or negligence. No warranty or re-
presentation byanyone other than this Company shall be binding on us.
To return a unit to factory, send only to the following address:
SEC America Corp.
78 Ethan Allen Drive
South Burlington, Vermont 05403
PLEASE RETAIN YOUR ORIGINAL BILL OF SALE. IT MUST
BE SUBMITTED WHEN MAKING ANY WARRANTY CLAIM
Tel: [phone]
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SEC
SEC America Corp
P.O. Box 2266
South Burlington 78 Ethan Allen Drive
VT 05403 www.secamerica.com
Tel: [phone] Fax: [phone]
cage code 07KU1
Copyright – July 2019 All rights reserved Printed in U.S.A.