Download DC/DC CONVERTER - SPS Electronics

SP
S
SPS ELECTRONICS INCORPORATED
8005 ISLAND ROAD | EDEN PRAIRIE, MN 55347 | PHONE: (952) 934-7004 | FAX: (952) 934-8882
DC/DC CONVERTER – 48 VDC
PN 22132 & 30100 & 30300
INSTALLATION GUIDELINES
Rev 2, March 1, 2005
COLOR CODES
BLUE
YELLOW
WHITE
RED
BLACK
B+, +48 VDC
B-, -48 VDC
CONTROL, ON = B+, OFF = OPEN
+13.5 VDC
- 13.5 VDC
WIRE/PIN ASSIGNMENTS
3 LEAD CONNECTOR/HARNESS
PIN A/BLUE
B+, +48
PIN B/YELLOW
B-, -48
PIN C/WHITE
CONTROL, B+, +48 VDC
2 LEAD CONNECTOR/HARNESS
PIN 2/RED
+13.5 VDC
PIN 1/BLACK
-13.5 VDC
INSTALLATION

INSTALLATION SHOULD BE BY A QUALIFIED TECHNICIAN TRAINED IN THE SAFETY
PROCEDURES OF WORKING WITH BATTERIES AND WITH B+ VOLTAGE LEVELS.

TURN BATTERY DISCONNECT OFF, SO THAT BATTERY PACK IS ISOLATED FROM ALL
VEHICLE WIRING.

IF THE VEHICLE DOES NOT HAVE A BATTERY DISCONNECT SWITCH, THEN REMOVE THE
B+ AND THE B- LEADS SUCH THAT THE BATTERY IS FULLY ISOLATED FROM THE VEHICLE.

VERIFY WITH A VOLTMETER THAT THE BATTERY IS DISCONNECTED AND IT IS SAFE TO
WORK ON THE WIRING.

MOUNT THE CONVERTER TO THE VEHICLE USING THE BASE PLATE AS A TEMPLATE.

MAKE AND INSTALL THE HARNESS THAT IS NEEDED TO REACH THE LOCATION OF THE
DC/DC CONVERTER. A 15 AMP, FAST ACTING, 100 VDC FUSE SHOULD BE INSTALLED IN
SERIES WITH THE B+ LEAD (BLUE). A 30 A, FAST ACTING, 32 VDC FUSE SHOULD BE
INSTALLED IN THE +12 V LEAD (RED).

VERIFY THE HARNESS IS CORRECT USING A DVOM. WIRING ERRORS IN INSTALLING THE
CONVERTER WILL CAUSE IT TO FAIL AND WILL VOID ANY WARRANTY.

RECONNECT THE BATTERY.

ENABLE THE CONVERTER AND USING A VOLTMETER VERIFY THE OUTPUT VOLTAGE IS
13.5 + .5 VDC, PRIOR TO CONNECTING THE 12 VDC LOADS.
OPTION – ALWAYS ON MODE
THE CONVERTER MAY BE INSTALLED IN THE ALWAYS ON MODE BY HARD WIRING THE
CONTROL LEAD TO B+.
THE CONVERTER HAS A NO LOAD DRAW OF 185+20 MILLIAMPS IN THE ALWAYS ON
(ENABLED) MODE, THE BATTERY PACK SHOULD BE FULLY CHARGED AT LEAST ONCE PER
WEEK. THE BATTERY DISCONNECT SHOULD BE OPENED IF THE VEHICLE IS GOING TO BE
STORED FOR AN EXTENDED PERIOD OF TIME WITHOUT PERIODIC CHARGING.
RADIO APPLICATIONS
THE RADIO CHASSIS SHOULD BE ISOLATED FROM THE VEHICLE CHASSIS. TO IMPROVE
RECEPTION A GROUND WIRE SHOULD BE RUN FROM THE RADIO CHASSIS TO THE VEHICLE
CHASSIS. THIS GROUND WIRE SHOULD INCLUDE AN ISOLATION CAPACITOR (1 uF
POLYPROPYLENE OR POLYESTER OR METALIZED FILM).
WHEN USED WITH A RADIO, THE ALWAYS ON MODE MAY BE USED TO MAINTAIN THE RADIO
MEMORY.