11 - 4 11 - 4
MELSEC-Q
11 SUB FUNCTIONS
(2) When "0" is set in "
Pr. 6
Bias speed at start", making a speed change with
the setting of "0" in "
Cd. 7
New speed value" results in the following.
• A deceleration stop is made and 0 speed (
Md. 7
Status: b2) turns ON.
• The axis stops but "
Md. 4
Axis operation status" is "Speed.Position
Speed" or "JOG Operation" and the BUSY signal remains ON. (When the
axis stop signal is turned ON, the BUSY signal turns OFF and "
Md. 4
Axis
operation status" changes to "Stopped".)
In this case, making a speed change with the setting of other than "0" in
"
Cd. 7
New speed value" and "1" in "
Cd. 6
Speed change request" turns
OFF 0 speed (
Md. 7
Status: b2), enabling operation to be continued.
[X8 to XF]
10000
ON
OFF
ON
OFF (0)
ON (1)
OFF (0)
ON (1)
OFF
[Y8 to YF]
Cd. 7
BUSY signal
New speed value
Speed change request
Positioning control
0 speed
Status : b2
Positioning start signal
Cd. 6
Md. 7
Fig. 11.3 Speed change at new speed value "0" (during speed control of speed-position switching control)
(3) A speed change cannot be made during the following deceleration. (The
speed change request is ignored.)
• During deceleration started by turning ON the axis stop signal
• During deceleration started by turning OFF the JOG start signal
(4) If the speed change request is made during position control of speed-
position switching control or during OPR control, the "Speed change not
possible" warning (warning code: 22) occurs and a speed change cannot be
made.
(5) If the value set in "
Cd. 7
New speed value" is equal to or higher than "
Pr. 5
Speed limit value", the "Outside speed" warning (warning code: 20) occurs
and the speed is controlled at "
Pr. 5
Speed limit value".
If the value set in "
Cd. 7
New speed value" is lower than "
Pr. 6
Bias speed
at start", the "Outside speed" warning (warning code: 20) occurs and the
speed is controlled at "
Pr. 6
Bias speed at start".
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