KEPCO KIT 219-0537 User Manual

INSTRUCTION SHEET

KEPCO

An ISO 9001 Company.

KIT

BOP MODIFICATION KIT

1. DESCRIPTION

This kit is used to modify a standard BOP 20-10M-232 power supply to a BOP 20-10M-232-26896 to allow the unit to work
with capacitive loads (up to 30uF) in Voltage mode, either with or without the BIT 232 card installed. When using local sens­ing, install links between Power Terminals and corresponding Sense Terminals where the Load is connected (either front
panel or back panel, not both). When using remote sensing: 1) remove all local links (front and back) between power and
sense terminals, 2) connect the Sense Terminals (at the front or back, where the Load is connected) to the load and 3) con­nect a 10

2. MATERIAL SUPPLIED (SEE TABLE 1.)

Table 1 lists the contents of this kit and a description of each component.

Capacitor, 1UF 200V, 10% A1C1A added to A1 board 117-0207 1

Capacitor, 3300pF 100V, 10% Replaces A1C14 and A1C25. 117-1123 2

Capacitor, 0.022UF 200V, 10% Replaces A1C22. 117-0377 1

Capacitor, 0.01UF 200V, 10% Replaces A1C21. 117-0353 1

µF/50V ceramic capacitor between front panel OUTPUT and OUT SENSE terminals.

TABLE 1. MATERIAL SUPPLIED

ITEM DESCRIPTION KEPCO PART NO. QUANTITY

219-0537

Sleeving Insulates component leads (cut as required). 197-0121 4 in.

Nameplate overlay Goes over existing nameplate to show that unit has been modified. 188-2905 1

Instruction Sheet Contains instructions for installing KIT 219-0537 components. 228-1649 1

3. INSTALLATION

1. Disconnect unit from power source and remove wrap-around cover by removing 11 screws (see Figure 1): five screws
from each side and one at the top. Be careful not to damage ground strap attached to cover. For convenience the
ground strap can be removed from the cover.

2. Tag and disconnect wires/cables from A1 board.

3. Remove six screws and remove A1 board from the chassis.

4. Refer to Figure 2 and remove capacitor C35.

5. Remove capacitors C14 and C25. Replace with replacement component, part, part number 117-1123 from Kit.

6. Remove capacitor C22. Replace with replacement component, part number 117-0377 from Kit.

7. Remove capacitor C21. Replace with replacement component, part number 117-0353 from Kit.

8. Install sleeving over leads of Capacitor C1A, part number 117-0207 from Kit. Add C1A at solder side of PCB as shown in
Figure 2, from point A to point B. Secure capacitor C1A to PCB using a drop of RTV or similar adhesive.

9. Restore wires/cables disconnected in step 2 and attach A1 board to chassis using six screws removed during disassem­bly.

10. If previously disconnected, restore ground strap connection. Reinstall wraparound cover using 11 screws removed dur­ing disassembly.

11. Install new nameplate supplied in Kit over existing nameplate at rear panel, or over Model Identification (BOP 20-10M)
on the front panel.

KEPCO, INC.  131-38 SANFORD AVENUE  FLUSHING, NY. 11355 U.S.A.  TEL [phone]  FAX [phone]

http://www.kepcopower.com  email: [e-mail]

©2009, KEPCO, INC 060309
Data subject to change without notice 228-1649 REV 2

4. MODIFIED BOP SPECIFICATIONS

Bandwidth (DC to f-3dB, Nominal Resistive Load)

Voltage Mode: 3.4 KHz Current Mode: 2.3 KHz

Rise/Fall time (10%-90%, Nominal Resistive Load)
Voltage Mode: 74µS Current Mode: 106µS

Slew Rate

Voltage Mode: 0.54V/µS Current Mode: 0.21A/µS

Recovery at Step Load

Voltage Mode: 110µS(No Load - Nominal Load)
Current Mode: 110µS (Short-circuit - Nominal Load)

FIGURE 1. BOP DISASSEMBLY

C22

C35

FIGURE 2. A1 BOARD COMPONENT LOCATION

KEPCO, INC.  131-38 SANFORD AVENUE  FLUSHING, NY. 11355 U.S.A.  TEL [phone]  FAX [phone]

http://www.kepcopower.com  email: [e-mail]

C14

C25

C21

C1A

SOLDER SIDE

2 228-1649 REV 2 060309