Compact dc drive, model ge 157 from gururaj engineers is used for up to 2 hp dc motors. Different types of inputs like start stop inch [optically isolated] and 0-5 v, 0-10 v, 4-20 ma as reference are accepted. This dc drive can work with conventional dc motor. The speed of a dc motor is directly proportional to the armature voltage with fixed filed excitation. Technical specification of the product: range-0.14 hp to 2 hp; input-start, stop, inch, digital commands; ref-analogue 0-5 v/o-10 v: 0-20 ma, 4-20 ma [optional]; supply-230 v 10% 50 hz; output-field fixed 200-220 v dc, armature-variable 0-220 v dc; field current-1a max; cooling-natural air cooling; dimensions-w 180 x h 230 x d 100 mm; and mounting-base plate mounting [inside panel]. Standard feature include: led indication for quick fault finding/status indication; soft start; field fail protection; armature current limit/trip; fuse protection; 1 hp/2 hp selection through link; normal/pmdc motor selection through 1 link; and run [start] stop, inch selection through optical isolator so that command from plc/external source can be given to the drive.
