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KEPCO RA 19-1U Instruction Manual

Rack adapter hot swap rack adapter for 1u hsf series power supplies
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INSTRUCTION MANUAL
HOT SWAP RACK ADAPTER FOR 1U HSF SERIES POWER SUPPLIES
KEPCO INC.
An ISO 9001 Company.
IMPORTANT NOTES:
1)
This manual is valid for the following Model and associated serial numbers:
MODEL
2)
A Change Page may be included at the end of the manual. All applicable changes and
revision number changes are documented with reference to the equipment serial num-
bers. Before using this Instruction Manual, check your equipment serial number to identify
your model. If in doubt, contact your nearest Kepco Representative, or the Kepco Docu-
mentation Office in New York, (718) 461-7000, requesting the correct revision for your par-
ticular model and serial number.
3)
The contents of this manual are protected by copyright. Reproduction of any part can be
made only with the specific written permission of Kepco, Inc.
Data subject to change without notice.
©2023, KEPCO, INC
P/N 243-1025-R4
KEPCO, INC.
131-38 SANFORD AVENUE
RA 19-1U
RACK ADAPTER
MODEL
RA 19-1U
RACK ADAPTER
ORDER NO.
SERIAL NO.
FLUSHING, NY. 11355 U.S.A.
email: hq@kepcopower.com
REV. NO.
REV. NO.
KEPCO
THE POWER SUPPLIER™
TEL (718) 461-7000
World Wide Web: www.kepcopower.com
®
FAX (718) 767-1102

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Summary of Contents for KEPCO RA 19-1U

  • Page 1 Before using this Instruction Manual, check your equipment serial number to identify your model. If in doubt, contact your nearest Kepco Representative, or the Kepco Docu- mentation Office in New York, (718) 461-7000, requesting the correct revision for your par- ticular model and serial number.

  • Page 2: Table Of Contents

    Current Monitoring (-1URC and -1URY Models only) ................2-22 Remote On-Off (-1URX and -1URY Models only) ................... 2-23 Terminations............................2-24 Cooling ..............................2-24 Installation ............................... 2-24 2.9.1 Installing 1U HSF Power Supplies..................... 2-24 2.10 Wiring Instructions........................... 2-24 RA 19-1U 041323...
  • Page 3 Control Signal Connections ......................2-26 2.10.4 Output Load Connections ......................... 2-26 2.10.4.1 Reducing Ripple and Noise......................2-26 2.10.4.2 Parallel/Redundant Operation..................... 2-28 2.10.4.3 Series/Independent Operation ....................2-28 2.10.4.4 Mixed Operation.......................... 2-28 2.11 Removing/Replacing 1U HSF Power Supplies..................2-28 2.12 Shipping..............................2-28 RA 19-1U 041323...
  • Page 4 TITLE PAGE RA 19-1U Rack Adapter ..........................vi RA 19-1U Rack Adapter with 1U HSF Power Supplies Installed ..............1-1 RA 19-1U Interconnections, Simplified Diagram..................1-2 RA 19-1U Rack Adapter Rear Panel ......................1-3 Mechanical Outline Drawing, RA 19-1U Rack Adapter................1-4 RA 19-1U Schematic Diagram ........................
  • Page 5 LIST OF TABLES TABLE TITLE PAGE Compatible 1U HSF Power Supplies ......................1-3 RA 19-1U Accessories ..........................1-3 Equipment Supplied ............................2-1 Rear Panel DIP Switch Functions .......................2-3 Sense Resistor Values ..........................2-22 RA 19-1U 041323...
  • Page 6 FIGURE 1-1. RA 19-1U RACK ADAPTER RA 19-1U 041323...

  • Page 7: Section 1 - Introduction

    SECTION 1 - INTRODUCTION SCOPE OF MANUAL This manual contains instructions for the installation and operation of the RA 19-1U plug-in rack adapter (Figure 1-1) used with 1U HSF Series power supplies, manufactured by Kepco, Inc., Flushing, New York, U.S.A. Unless otherwise noted, 1U HSF refers to the following models -1U, -1UR, -1URT, -1URC, -1URX and -1URY.

  • Page 8: Safety

    I/O CONNECTOR, PS3, PS4 PS1, PS2 FIGURE 1-3. RA 19-1U INTERCONNECTIONS, SIMPLIFIED DIAGRAM SAFETY Certified to UL 60950-1, 1st Edition, 2007-10-31 (Information Technology Equipment - Safety - Part 1: General Requirements) and CSA C22.2 No. 60950-1-03, 1st Edition, 2006-07 (Informa- tion Technology Equipment - Safety - Part 1: General Requirements).

  • Page 9: Accessories

    ACCESSORIES Accessories for RA 19-1U Rack Adapters are listed in Table 1-2; see also Table 2-1 for addi- tional accessories supplied with the unit. OPTIONS Table 1-1 below describes the standard model options available with the RA 19-1U rack adapter. For non-standard options, contact Kepco Applications Engineering for assistance.
  • Page 10 5. FOR SHIPPING OR HIGH VIBRATION AND SHOCK ENVIRONMENTS,MODULES CAN EACH BE SECURED WITH ONE FLAT HEAD SCREW 100~ , 6-32x1/4" MIN. to 1/2" MAX. LONG.(KEPCO P/N 1010408 ) OR SIMILAR. THE SCREW WILL BE INSTALLED THRU THE COUNTERSUNK HOLES IN THE BOTTOM PAN.
  • Page 11 14.497 [368.2] 0.125 [3.2] 14.267 [362.4] 17.715 max [449.9 max.] 0.230 [5.8] 3010247 FIGURE 1-5. MECHANICAL OUTLINE DRAWING, RA 19-1U RACK ADAPTER (SHEET 2 OF 2) 1-5/(1-6 Blank) RA 19-1U 041323...
  • Page 12 JP32 JP13 JP22 JP31 JP12 JP21 JP30 JP11 JP20 JP29 JP10 COM2 JP19 JP28 COM1 COM2 COM3 COM3 COM4 JP18 JP27 COM2 COM3 COM4 JP26 JP45 JP17 3020630 P-12 P-34 FIGURE 1-6. RA 19-1U SCHEMATIC DIAGRAM 6-6/6-7 1-7/1-8 (Blank) 041323...

  • Page 13: Section 2 - Installation

    I/O mating connector and DC OUTPUT terminals (see PAR. 2.4). RACK ADAPTER KEYING INSTRUCTIONS RA 19-1U rack adapters incorporate a keying mechanism to prevent accidental insertion of the incorrect model 1U HSF power supply into any position. The 1U HSF power supplies are keyed by voltage at the factory.

  • Page 14: Establishing Key Positions

    To establish the keying of any position, simply install the 4-40 x 0.75 in. thread-forming screws (Kepco P/N 101-0480) into the corresponding holes as indicated in Figure 2-1. DO NOT OVER- TIGHTEN these screws (max torque 5 in.-lbs. (0.6 N x m). DO NOT ALTER THE KEYING AT THE POWER SUPPLY.

  • Page 15: Independent Operation

    (see Figure 2-2). Sensing for each slot can be configured independently: • Local sensing using rear panel DIP switches • Local sensing using external jumpers connected to the I/O mating connector or the DC OUTPUT terminal block. • Remote sensing RA 19-1U 041323...

  • Page 16: Independent Operation - Local Sensing Using Rear Panel Dip Switches

    OFF (open). Position 5 (current share) must be set to OFF and positions 6, 7, and 8 (alarms) can be configured per PAR. 2.4.4. FIGURE 2-2. INDEPENDENT OPERATION, LOCAL SENSING FOR PS1 AND PS2 USING REAR PANEL DIP SWITCHES, SIMPLIFIED DIAGRAM RA 19-1U 041323...

  • Page 17: Independent Operation - Local Sensing Using External Wiring

    Positions 3 and 4 (connecting sense lines in parallel) and Position 5 (current share) must be set to OFF. Configure Positions 6, 7, and 8 (alarms) per PAR. 2.4.4. FIGURE 2-3. INDEPENDENT OPERATION, LOCAL SENSING FOR PS1 AND PS2 USING EXTERNAL JUMPERS AT I/O MATING CONNECTOR, SIMPLIFIED DIAGRAM RA 19-1U 041323...

  • Page 18: Independent Operation - Remote Sensing

    Positions 3 and 4 (connecting sense lines in parallel) and Position 5 (current share) must be set to OFF. Configure Positions 6, 7, and 8 (alarms) per PAR. 2.4.4. FIGURE 2-4. INDEPENDENT OPERATION, REMOTE SENSING FOR PS1 AND PS2 USING EXTERNAL WIRING AT I/O MATING CONNECTOR, SIMPLIFIED DIAGRAM RA 19-1U 041323...

  • Page 19: Parallel Operation

    HSF -1U and -1UR power supplies. The power leads must be connected in parallel externally (see PAR. 2.10.4.2). (Configurations using internal parallel busing are also possible; consult Kepco’s Applications Engineering for details.) Three things must be considered when configur- ing the rack adapter for parallel operation: •...

  • Page 20: Parallel Current Share - Rear Panel Dip Switches

    NOTE: If rear panel DIP switch positions 3, 4 are closed (ON), use only one pair of sense lines to monitor voltage. FIGURE 2-5. PARALLEL OUTPUTS USING REAR PANEL DIP SWITCHES TO PARALLEL SENSE LINES AND CURRENT SHARE, PS1 AND PS2 (TYPICAL), SIMPLIFIED DIAGRAM RA 19-1U 041323...

  • Page 21: Parallel Current Share - External Wiring

    1 and 4 using external wiring at the I/O mating connector. I/O CONNECTOR, I/O CONNECTOR, PS3, PS4 PS1, PS2 FIGURE 2-6. PARALLEL OUTPUTS USING EXTERNAL WIRING, TYPICAL CONFIGURATION, SIMPLIFIED DIAGRAM RA 19-1U 041323...

  • Page 22: Sense Connections For Parallel Configurations

    PAR. 2.4.2.3.3: Parallel configurations using DIP switches to connect the sense lines in par- allel and external wires to configure remote sensing. • PAR. 2.4.2.3.4: Parallel configurations using external wires to connect the sense lines in parallel and external wires to configure remote sensing. 2-10 RA 19-1U 041323...

  • Page 23: Parallel Configuration Using Dip Switches To Connect Sense Lines In Parallel And External Wires To Configure Local Sensing

    6. Connect wire between I/O mating connector pin Sense (–) and corresponding power supply V(–) terminal at DC OUTPUT terminal block. FIGURE 2-7. TYPICAL PARALLEL CONNECTIONS USING EXTERNAL WIRES FOR LOCAL SENSING AND DIP SWITCHES TO PARALLEL SENSE WIRES 2-11 RA 19-1U 041323...

  • Page 24: Parallel Configurations Using External Wires To Connect Sense Lines In Parallel And External Wires To Configure Local Sensing

    7. Connect short jumper across I/O mating connector Sense (+) pins. 8. Connect short jumper across I/O mating connector Sense (–) pins. FIGURE 2-8. TYPICAL PARALLEL CONNECTIONS USING EXTERNAL WIRES FOR LOCAL SENSING AND I/O MATING CONNECTOR JUMPERS TO PARALLEL SENSE WIRES 2-12 RA 19-1U 041323...

  • Page 25: Parallel Configurations Using Dip Switches To Connect Sense Lines In Parallel And External Wires To Configure Remote Sensing

    5. Connect wire from I/O mating connector Sense (+) pin to V (+) at the load. 6. Connect wire from I/O mating connector Sense (–) pin to V (–) at the load. FIGURE 2-9. TYPICAL PARALLEL CONNECTIONS, REMOTE SENSING USING DIP SWITCHES TO PARALLEL SENSE WIRES 2-13 RA 19-1U 041323...

  • Page 26: Parallel Configurations Using External Wires To Connect Sense Lines In Parallel And External Wires To Configure Remote Sensing

    7. Connect wire from I/O mating connector Sense (+) pin to V (+) at the load. 8. Connect wire from I/O mating connector Sense (–) pin to V (–) at the load. FIGURE 2-10. TYPICAL PARALLEL CONNECTIONS, REMOTE SENSING USING I/O MATING CONNECTOR JUMPERS TO PARALLEL SENSE WIRES 2-14 RA 19-1U 041323...

  • Page 27: Series Operation

    HSF -1U and -1UR power supplies may be connected in series to obtain higher output voltages. The RA 19-1U rack adapter is designed to safely handle a maximum output voltage of 500 Volts; contact Kepco applications engineering for additional information. The power supply with the lowest rated value of maximum current establishes the maximum load current allowed.

  • Page 28: Series Configuration, Simplified Diagram

    FIGURE 2-11. SERIES CONFIGURATION, SIMPLIFIED DIAGRAM 2-16 RA 19-1U 041323...

  • Page 29: Alarm Configurations

    NOTE: HSF-1URX and -1URY models do not include the normally open (N.O.) line, so close on failure configurations are not applicable. The RA 19-1U is configured at the factory for independent operation of these lines. It is possible to configure these alarm lines to allow multiple power supplies to provide a failure indication using the N.O.
  • Page 30 FIGURE 2-12. CLOSE ON FAILURE ALARM CONFIGURATION USING REAR PANEL DIP SWITCHES, SIMPLIFIED DIAGRAM 2-18 RA 19-1U 041323...

  • Page 31: Close On Failure Using External Wiring At I/O Mating Connector

    N.O. and COM lines. Figure 2-13 is a simplified diagram illustrating a close on failure alarm configuration for four power supplies using external wiring at the I/O mat- ing connector. FIGURE 2-13. CLOSE ON FAILURE ALARM CONFIGURATION USING EXTERNAL WIRING AT I/O MATING CONNECTOR, SIMPLIFIED DIAGRAM 2-19 RA 19-1U 041323...

  • Page 32: Alarm Line (Open On Failure)

    To configure PS1, PS2, PS3 and PS4 as open on failure, set position 8 of DIP switches DIP 2, DIP 3, and DIP 4 to ON (closed). The failure indication (open circuit) will be present across N.C.4 and COM 1. FIGURE 2-14. OPEN ON FAILURE ALARM CONFIGURATION USING REAR PANEL DIP SWITCHES, SIMPLIFIED DIAGRAM 2-20 RA 19-1U 041323...

  • Page 33: Open On Failure Using External Wiring Of I/O Mating Connector

    It is necessary to set DIP switch position 8 to OFF (open) for each slot included in the open on failure alarm circuit. FIGURE 2-15. OPEN ON FAILURE ALARM CONFIGURATION USING EXTERNAL WIRING AT I/O MATING CONNECTOR, SIMPLIFIED DIAGRAM 2-21 RA 19-1U 041323...

  • Page 34: Current Monitoring (-1Urc And -1Ury Models Only)

    Rs (see Table 2-3) is measured across ± IMON pins (requires millivoltmeter, range 0 to 200mV). Accuracy of voltage drop across Rs (representing monitored output current) is ±10%; contact Kepco if greater accuracy is required. See Figure 2-16 for typical configuration. TABLE 2-3. SENSE RESISTOR VALUES SERIES 3.3V Model...

  • Page 35: Remote On-Off (-1Urx And -1Ury Models Only)

    To reverse the polarity of the on-off voltage (where output ON requires no voltage, or short cir- cuit, or 0 to 0.8V across ±RC pins of I/O connector), contact Kepco. I/O connector pins designated for use for remote on-off are as follows: I/O Connector –RC...

  • Page 36: Terminations

    2.9.1 INSTALLING 1U HSF POWER SUPPLIES Refer to Figure 1-1, for proper slot positions applicable to the RA 19-1U Rack Adapter. Insert 1U HSF power supply in selected slot until power supply front panel is flush with rack adapter chas- sis and secure with two front panel screws on power supply.
  • Page 37 Terminal G (Ground) is the safety ground connection for the RA 19-1U. It is connected to the RA 19-1U chassis and to the safety ground terminal of the input power connector for each of the power supply mounting positions via the PCB backplane. Terminal G must be connected to safety ground in order to ensure proper grounding of the 1U HSF power supplies.
  • Page 38 FCC Class B. It may be necessary to add external source power filtering, such as installing snap-on ferrite beads on the line cord wires of the RA 19-1U as close to the input a-c terminal block as possible. Another option is to add an in-line cabinet-mounted EMI filter (available from a number of manufacturers) between the source power and the RA 19-1U line cord.
  • Page 39 FIGURE 2-18. RIPPLE AND NOISE MEASUREMENT SETUP DIAGRAM 2-27 RA 19-1U 041323...
  • Page 40 2.10.4.4 MIXED OPERATION The design of the RA 19-1U rack adapters permits the user to configure 1U HSF power supplies for almost any combination of independent, series and parallel operation, both within a single rack adapter and between different RA 19-1U rack adapters, within the limits of the 1U HSF operation envelope and the current and voltage ratings specified in PAR.s 2.10.4.2 and...

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