
3A SERIES OPERATION MANUAL
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3A SERIES AC & DC LOAD OPERATION MANUAL Page 3 of 56
Table of Contents
1Contact Information................................................................................................................................ 6
2Front Matter ........................................................................................................................................... 7
2.1 Limited Warranty .................................................................................................................................................... 7
2.2 Service and Spare Parts Limited Warranty ............................................................................................................ 7
2.3 Safety Information .................................................................................................................................................. 7
2.4 Safety Notices.......................................................................................................................................................... 9
3Product Overview ................................................................................................................................. 11
3.1 General Description .............................................................................................................................................. 11
3.2 Operating Modes .................................................................................................................................................. 11
3.2.1 Constant Current Mode ..................................................................................................................................................... 11
3.2.2 Linear Constant Current Mode (LIN) .................................................................................................................................12
3.2.3 Constant Resistance Mode (CR) ........................................................................................................................................12
3.2.4 Current Read-back.............................................................................................................................................................. 13
3.3 External Sync Mode .............................................................................................................................................. 13
3.4 Product Features ................................................................................................................................................... 13
3.5 Accessories Included ............................................................................................................................................. 14
3.6 Interface Options................................................................................................................................................... 14
4Technical Specifications ........................................................................................................................ 15
4.1 Operating Ranges.................................................................................................................................................. 15
4.2 Operating Modes .................................................................................................................................................. 15
4.3 Protection Modes.................................................................................................................................................. 15
4.4 Power Factor Range .............................................................................................................................................. 16
4.5 Metering ................................................................................................................................................................ 16
4.6 Analog I/O.............................................................................................................................................................. 16
4.7 Power & Cooling.................................................................................................................................................... 16
4.8 Dimensions & Weight ........................................................................................................................................... 17
4.9 Environmental ....................................................................................................................................................... 17
4.10 Voltage versus Current Operating Envelope Charts............................................................................................ 18
4.10.1 Model 3A060-20 V-I Curves............................................................................................................................................... 18
4.10.2 Model 3A150-08 V-I Curves............................................................................................................................................... 19
4.10.3 Model 3A300-04 V-I Curves............................................................................................................................................... 20
5Unpacking and Installation.................................................................................................................... 21
5.1 Inspection .............................................................................................................................................................. 21
5.2 Installation and Removal of 3A Series Load Modules ......................................................................................... 21
5.3 Cleaning ................................................................................................................................................................. 22
5.4 Powering Up .......................................................................................................................................................... 22
5.5 In Case of Malfunction .......................................................................................................................................... 22
5.6 Load Connection.................................................................................................................................................... 23
5.7 Interface Options................................................................................................................................................... 23
5.8 External Sync Connector....................................................................................................................................... 23
6Front Panel Operation........................................................................................................................... 24
6.1 Front Panel Layout ................................................................................................................................................ 24
6.2 User Controls, Displays and Connectors .............................................................................................................. 25
6.3 Coarse and fine Adjustment Ranges .................................................................................................................... 30
6.1 AC or DC Load Mode Selection............................................................................................................................. 31
6.1.1 AC Mode Setting.................................................................................................................................................................31
6.1.2 DC Mode Setting.................................................................................................................................................................31
6.2 AC Load Parameter Settings ................................................................................................................................. 32