KEPCO Kit 219-0547, Transition Circuit Kit BOP 20-50MG, GL and BOP 25-40MG, GL - Manual

©2012, KEPCO, INC 1
Data subject to change without notice 228-1743 REV 4
I N S T R U C T I O N M A N U A L
BOP 1000W KEPCO
KEPCO, INC. 131-38 SANFORD AVENUE FLUSHING, NY. 11355 U.S.A. TEL (718) 461-7000 FAX (718) 767-1102
http://www.kepcopower.com email: [email protected]
An ISO 9001 Company.
Transition Circuit
KIT 219-0547
BOP 20-50MG, GL and BOP 25-40MG, GL
TRANSITION CIRCUIT KIT
1. DESCRIPTION
Kepco KIT 219-0547 contains components used for a field upgrade of BOP 1000W power supplies specified in
PAR. 2 to allow smoother transitions through zero power when driving inductive loads at low frequencies and/or at
a low rate of output power changes. This upgrade avoids possible faults under these conditions which can cause
the unit to display an error and reduce output power to zero.
The Transition circuit detects when the voltage and the current at the BOP output have opposite signs, showing
that the unit is beginning to sink power. This turns on a preload placed between the Front End Module and the Out-
put Module of the BOP. If the Sink power increases to the point that the Source-Recuperation Detector is triggered,
the Front End switches to Sink-Recuperation mode at an increased level of power, as the preload is turned off by
the Source-Recuperation Detector. This permits a sharper transition towards Sink-Recuperation mode. If the Front
End switches to Source mode, the preload is activated for a predetermined period of time in order to boost the
power requested from the Front End, resulting in a sharper transition towards the Source mode.
2. APPLICABILITY
This KIT applies only to BOP 1KW 20V (BOP20-50MG and BOP 20-50GL) and 25V (BOP 25-40MG) models. Con-
tact Kepco for kits applicable to other models.
3. INSTALLATION INSTRUCTIONS
3.1 MATERIAL SUPPLIED (See Table 1.)
TABLE 1. MATERIAL SUPPLIED
MATERIAL KEPCO PART NUMBER QUANTITY
Transition Circuit assembly
• Printed Circuit Board assembly (A7A3)
• Heat Sink assembly
300-0509
236-2923
136-0476
1
1
1
Screw, TPTH, 8-18 X 0.625 IN. 101-0328 1
Cable Assembly, A2A5 to A7A3J1 (5-Pin connector) 118-1265 1
Cable Assembly, A4A8 to A7A3J3 (4-Pin connector) 118-1266 1
Cable Assembly, A4A8 to A7A3J4 (3-Pin connector) 118-1267 1
Resistor, 150KOhms, 1%, 1/8W (R59) 115-2597 1
Resistor 200KOhms, 1%, 1/4W (R58, R70) 115-2809 2
Cable Tie 138-0076 5
Plastic Tie Mount 138-0084 1
Instruction Manual 228-1743 1