15-B Maintenance Mnl, GFZ-62075E/03 - Automation Service Srl

1. GENERAL
B–62075E/03
This manual describes the following products:
Product name
FANUC Series 15 – TB
FANUC Series 150 – TB
FANUC Series 15 – TFB
FANUC Series 15 – TTB
FANUC Series 150 – TTB
FANUC Series 15 – TTFB
FANUC Series 15 – MB
FANUC Series 150 – MB
FANUC Series 15 – MFB
Abbreviations
15 – TB
15 – TFB
15 – TTB
Series 15 – B
15 – TTFB
15 – MB
15 – MFB
NOTE
For maintenance of FANUC MMC–IV, see “FANUC MMC–IV Connection and Maintenance Manual
(B–62493E)”.
Explanation of terms frequently used in CNC are:
Least input increment
The minimum unit for program input of the move command
Least command increment
The minimum unit of a command to be given from CNC to the machine tool
Detection unit
The minimum unit of detectable axis move distance
Command multiplier (CMR)
A constant to enable the weight of CNC command pulses to match the weight of pulses from the detector
Detection multiplier (DMR)
A constant to enable the weight of CNC command pulses to match the weight of pulses from the detector
NOTE The relations among the least input increment, detection unit, CMR, and DMR are as specified below.
Least input increment= CMR × detection unit
Detection unit= Move amount per revolution of motor/(DMR × number of pulses of detector per
revolution of motor)
The flexible feed gear function in the digital servo unit defines constant DMR using two parameters
n and m (DMR = n/m).
CRT/MDI panel
CRT and Manual Data Input
This operator’s panel is used to input command to CNC or display CNC conditions using key switches.
Parameter
A value set in the CNC which enables the CNC to fully utilize the machine tools functional characteristics.
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