Page 1
USER'S GUIDE AND TECHNICAL REFERENCE AC SOURCE BEHLMAN MODEL AC/DC-1200 SERIES FOR SERVICE ASSISTANCE CONTACT BEHLMAN CUSTOMER SERVICE DEPARTMENT PHONE TOLL FREE 1-800-874-6727 OR WRITE BEHLMAN CUSTOMER SERVICE DEPARTMENT 80 CABOT COURT HAUPPAUGE, NY 11788 PHONE: (631) 435-0410 : (631) 951-4341...
Page 2
SAFETY SUMMARY The following safety precautions must be observed during all phases of operation, service, and maintenance of this equipment. Failure to comply with these precautions or with specific warnings elsewhere in the manual violates safety standards associated with the design and intended use of this equipment. This manual forms an integral part of the equipment and must be available to operating personnel.
Page 3
DANGEROUS PROCEDURE WARNINGS Warnings will precede potentially dangerous procedures in this manual. Instructions contained in the warning must be followed. Warnings will be preceded by the caution symbol (above). RISK OF ELECTRIC SHOCK This symbol warns personnel of hazardous conditions due to the exposure of hazardous voltage that can be lethal if contacted.
Page 4
CLAIM FOR DAMAGE IN SHIPMENT Under the FOB factory terms of sale, ownership and responsibility are transferred to the customer when the equipment leaves the factory. Each Behlman product is shipped from the factory in proper operating condition. Immediately upon receiving equipment, unpack and inspect it for evidence of damage incurred in shipment.
Page 5
WARRANTY CERTIFICATE Behlman Electronics, Inc. warrants to the original purchaser, for a period of one (1) year from the shipment from Behlman, each item to be free from defects in material and workmanship. Behlman’s obligation and the Purchaser’s sole remedy for any breach or violation of this agreement is limited to adjustments, repair or replacements for parts which have been promptly reported by the Purchaser as having been in its opinion, defective and so found by Behlman upon inspection.
TABLE OF CONTENTS BEHLMAN AC SOURCE, MODEL ACDC-1200 SECTION INTRODUCTION Specifications UNPACKING AND INSTALLATION Unpacking Installation / Wiring Installation Considerations OPERATION Controls and Indicators To Operate the Equipment Shutdown Procedure Operating Considerations Alarm Contacts DC Preferred Input Option THEORY OF OPERATION General Detailed Theory Reference Oscillator...
SECTION 1 INTRODUCTION The Behlman model series AC/DC 1200 inverters provide conditioned AC power. They may be powered from AC or DC input voltages that vary over a wide range. The output from these models is an isolated fixed sine wave voltage regulated to better than 1 percent.
SPECIFICATIONS INPUT POWER 120 VAC ±10% single phase, 47 to 63 Hz, 20 Amps max. 48 VDC or 125 VDC ±20% (depending on model) DC burden for 48V units = 40 Amps @ 38 VDC (>2A quiescent) DC burden for 125V units = 15 Amps @ 100 VDC (>1A quiescent) OUTPUT POWER Voltage:...
SECTION 2 UNPACKING AND INSTALLATION UNPACKING After unpacking the inverter (unit), carefully conduct a thorough inspection of controls, indicators, and chassis. If the unit shows signs of damage, do not attempt to operate. File a damage claim with the carrier responsible. Notify Behlman immediately. INSTALLATION / WIRING This unit is designed to be rack mounted in a standard EIA 19"...
Page 10
REAR PANEL FRONT PANEL BYPASS FUSE DC PRESENT SYSTEM OK AC OUTPUT AC PRESENT CAUTION ACDC-1200-48 BEHLMAN On-Line Uninterruptible Power Source FIGURE 2-1 CONTROLS AND FEATURES AC/DC1200 SERIES ITEM TYPE DESCRIPTION INPUT BREAKER (s) Controls AC/DC input ON/OFF. AC BYPASS FUSE Fuses AC after bypass relay.
Page 11
MECHANICAL OUTLINE BYPASS FUSE DC PRESENT SYSTEM OK AC OUTPUT AC PRESENT CAUTION BEHLMAN ACDC-1200-48 On-Line Uninterruptible Power Source FIGURE 2-2 MECHANICAL OUTLINE AC/DC 1200 SERIES INVERTERS MNL107-900-000D...
INSTALLATION CONSIDERATIONS Figure 2-3 illustrates typical wiring to and from the AC/DC 1200. When the load is running from the inverter (not-by-passed) the output circuit is completely floating with respect to the AC input, DC input and earth connection. This arrangement provides the user with flexibility in regards to the output circuit reference point.
SECTION 3 OPERATION WARNING This equipment involves the use of voltages and currents that can be hazardous under normal operating conditions. Only qualified personnel should be allowed to operate or service it. All covers and guards must always be in place during operation. A protective earth connection must be used.
TO OPERATE THE EQUIPMENT Ensure that front panel circuit breaker(s) is set to OFF. Connect a suitable load to NEMA 5-15R receptacles (or other optional output connector). Turn on AC INPUT Power. Turn on DC INPUT Power. Set the front panel circuit breaker(s) to ON (cooling fans noise should become evident). If desired, the output voltage and frequency can be confirmed by connecting a true RMS voltmeter such as a Fluke model 87 across the output terminals or load.
OPERATIONAL CONSIDERATION FOR DC PREFERRED OPTION The standard model AC / DC 1200 is designed to operate primarily from the AC line. If the AC line fails, operation from the DC supply (Batteries) is automatic. When the AC is recovered, the unit will again automatically resume operation from the line.
SECTION 4 THEORY OF OPERATION GENERAL The ACDC1200 series (unit) represent a rugged, high performance AC UPS. The unit operates from a 120 VAC or a 48 VDC, or 125 VDC INPUT based on the model selected. DETAILED THEORY The AC input voltage is rectified by employing a voltage doubling circuit consisting of a half wave rectifier and two banks of input capacitors.
CLOSING THE LOOP In order to provide a clean output with very good regulation, two feedback loops are used. One feedback loop is a fast loop that takes the IGBT output and closes the loop to the error amplifier. This loop corrects for switching effects on a pulse-by-pulse basis. The second feedback loop corrects for regulation.
SECTION 5 TROUBLE SHOOTING TROUBLESHOOTING In the event problems are encountered during the installation and operation of the inverter refer to the chart below before assuming the inverter is at fault. If it is determined the fault is with the inverter, contact Behlman Electronics for service information.
APPENDIX A RECOMMENDED SPARE PARTS LIST MODEL AC/DC 1200 - 125 This appendix is included as a guide to help the end user to maintain a quantity of these power supplies. It is based on maintenance of a quantity greater than 10 units. The list is based on replacing the electronic assemblies to the board level.
REVISION HISTORY Rev. DESCRIPTION DATE UPDATED, ADDED SAFETY INFORMATION, 4/4/2016 PLACED UNDER REVISION CONTROL. MNL107-900-000D...
Page 23
P/O BASEPLATE WIRE TO BR2 14AWG BLK 14AWG WHT 14AWG PTC1 MOV1 10 5W BLK 14AWG LINE E14B LINE AC INPUT NEUTRAL RED 2X14AWG RED 16AWG FILTER GRN\YEL MOV2 EARTH WHT 14AWG 22K,2W 3.9K,1W RED 14AWG BLK 16AWG GRN/YEL 14AWG DC\DC INVERTER P1-1 107-915-000/001...
Page 24
P/O BASEPLATE WIRE TO BR2 14AWG BLK 14AWG WHT 14AWG PTC1 CB1A MOV1 10 5W BLK 14AWG LINE E14B LINE AC INPUT NEUTRAL RED 16AWG FILTER GRN\YEL MOV2 EARTH WHT 14AWG 22K,2W 3.9K,1W BLK 16AWG GRN/YEL 14AWG DC\DC INVERTER P1-1 107-915-000/001 22K,2W P1-2...
Page 25
REVISION HISTORY P R O P R I E T A R Y ZONE DESCRIPTION DATE APPROVED DRL # INIT. THE PROPRIETARY INFORMATION CONTAINED IN THIS DOCUMENT MUST NOT BE DISCLOSED TO OTHERS FOR ANY PURPOSE, NOR USED FOR INITIAL RELEASE MANUFACTURING PURPOSES WITHOUT PERMISSION OF BEHLMAN 03-29-99 REVISED PER ECO 99-060...
Page 26
LTR. REVISION DESCRIPTION DATE APRV. PER ECN 98-203 & 99-053 3/25/99 ON BASEPLATE NTC1 NTC2 TO E10 330pF 330 5W TO E12 .001 AC SURGE LIMITER J4-3C E14-B J1-1A L4 A J4-2B T1 OFF PCB +160 VDC J4-1A J1-2A NEUTRAL J5-3C T1-A J1-3A...
Need help?
Do you have a question about the AC/DC-1200 Series and is the answer not in the manual?
Questions and answers