ID
Index Name / Setting
Unit Description
(31)
Not defined
(32)
Not defined
(33)
Not defined
JOG_EXT_POS (34)
Jog Positive (extended mode)
JOG_EXT_NEG (35)
Jog Negative (extended mode)
FAST_DISC (36)
Fast discharge
LIM_OFF (37)
Limits (torque and velocity) off
LOCK_POS (38)
Lock positive direction
LOCK_NEG (39)
Lock negative direction
BRAKE_ON (40)
Switch off motor break at once
PWR_REL_DIRECT (41)
Direct activation of power relay (with 1000ms
delay)
(42)
Undocumented value
(43)
Undocumented value
(44)
Undocumented value
(45)
Undocumented value
(46)
Undocumented value
(47)
Undocumented value
(48)
Undocumented value
Table 9.12: “Analog inputs” function selectors (continue)
9.4.3 Analog input scaling
Analog input scaling makes it possible to convert the analog input value to the
process variable by using a gain factor, offset and backlash. The illustration shows
how the scaling function works. Entering the desired voltage ranges will yield the
values for the offset (P 428 - CON_ANA_Offset) and gain (P 429 - CON_ANA_Gain).
Depending on the function selected for the ISAxx analog input with the function
selector, it will be possible to use the “Options...” button to configure additional
process variables such as “the backlash in rev/min” (when using an analog setpoint,
REFV).
Usage examples
MOOG
ID No.: CB40859-001 Date: 11/2020
MSD Servo Drive - Device Help
305
9 Inputs/Outputs settings
l
Change to input voltage range of analog torque scaling
l
Change to input voltage range of speed override function
l
Change to switching threshold of a digital input function
Image 9.13: Scaling of an analog channel
Example: Analog torque scaling:
The standard setting for the controller is an input voltage range of 0 V to +10 V,
corresponding to 0% to 100%. With this setting, any value between -10 V and 0 V
corresponds to 0%.
l
Say that you want an input voltage range of -10 V to +10 V, in which case -10
V would correspond to 0% of the torque and +10 V to 100% of the torque.
o
In
min
= -10 V, Out
min
= 0 V
o
In
max
= +10 V, OUT
max
= +10 V
