Parker ac890 - Page 46

890CS & 890CD Common Bus Units 4-24
890CS Common Bus Supply - Frames B & D; 890CD Common Bus Drive and 890SD Standalone Drive - Frames B, C & D
890CD Minimum Control Connections
Minimum Connections
♦ Connect X14/04 to a clean, external
earth
Safe Torque Off
♦ To disable STO:
Connect X11/01 and X11/03 to
X14/03.
Connect X11/04 to X14/04
Speed Reference
♦ Connect a 10kΩ potentiometer at
terminal X12:
X12/01 : Low (CCW)
X12/04 : Wiper
X12/08 : High (CW)
♦ Connect the shield to earth/ground at
the control bracket.
OR
♦ External 2-wire speed reference
between:
X12/01 : negative
X12/04 : positive
♦ Connect the shield to earth/ground at
the control bracket.
Sequencing
♦ RUN (maintained contact)
X14/03 : 24V
X15/02 : RUN