468
TECHNICAL REFERENCE
June 1999
96-8000
M-FIN DISCRETE I NPUT
The M-FIN discrete input is a low voltage circuit. When the circuit is open, there is +12V DC at this signal.
When this line is brought to ground, there will be about 10 milliamps of current. M-FIN is discrete input #10 and
is wired from input #10 on the Inputs PCB on the Input/Output Assembly. The return line for grounding the
circuit should also be picked up from that PCB. For reliability, these two wires should be routed in a shielded
cable where the shield is grounded at one end only. The diagnostic display will show this signal a îš“1îš” when the
circuit is open and a îš“0îš” when this circuit is grounded.
TURNING M FUNCTIONS O N A ND O FF
The M code relays can also be separately turned on and off using M codes M51- M53 and M61- M63. M51 to
M53 will turn on one of the relays and M61 to M63 will turn the relays off. M51 and M61 correspond to M21,
etc.
Note: If the M code relay board is installed M51-M58 will turn on the relays and M61-
M68 will turn off the relays. M51 and M61 correspond to M21, etc. on the M code
relay board.
WIRING THE R ELAYS
The relays are marked on both the IOPCB and the M code relay board, with their respective terminals forward
of them. If the optional M code relay board is installed then the connections on the IOPCB are to be left unused
as they are replaced by the relays on the optional board. Refer to the figures below, and the Probe Option figure
in the Electrical Diagrams section for the terminal labeling. Maximum voltage for the relays is 125 VAC with a
maximum amperage of 3 amps.
WARNING!
Power circuits and inductive loads must have snubber protection.
IOPCB Relays M Code Relay Board
CAUTION! If a screw terminal is already in use DO NOT connect anything else to it.
Call your dealer.
Note: Relay M24 on the IOPCB is reserved for Through the Spindle Coolant (AUXCLT).
To Next Page
Loading...
Need help?
General
