72 - 23/May/97
3.2.18 Command: ET - Extra parameter for Tacho output
Function:
it allows to scale the Tacho Tests outputs on J8 connector
Syntax:
data monitoring:
n
address ET <CR>
data input:
n
address ET n <CR>
Address type:
axis
Unit of measure:
-
Range:
50 to 100. Tacho outputs =
±
(ET/10)
∗
(MR/100) [V] for
±
MV
Default:
80
Password:
yes
(
∗
) addressing:
no
Opposite to:
-
See also:
MR, MV
Examples:
n
1 MV 3000 <CR>: sets max velocity to 3000 rpm for axis 1.
n
1 MR 100 <CR>:
sets max velocity reference to 10 V for axis 1.
n
1 ET 50 <CR>:
sets ET parameter to 50 for axis 1. The Tacho Test 1 (J8, pos.1) will be
±
5V for
±
3000 rpm.
n
1 ET <CR>:
questions axis 1 about the extra parameter for Tacho Test 1. The answer is: "A01
EXTRA PAR. FOR TO = 50".
3.2.19 Command: EV - Error Velocity
Function:
it allows to set the maximum velocity error between reference
velocity and the actual speed in rpm. If the set value is overcome,
a fault occurs. Value = 0 disables the command.
Syntax:
data monitoring:
n
address EV <CR>
data input:
n
address EV n <CR>
Address type:
axis
Unit of measure:
n = rpm
Range:
1 to MV. 0 = disabled
Default:
0
Password:
yes
(
∗
) addressing:
no
Opposite to:
-
See also:
-
Remark:
While testing the drives via step response, it is advisable to disable this protection or set a
high value of tolerated error, to avoid continuous faults.
Examples:
n
1 EV 100 <CR>:
it sets axis 1 to tolerate up to 100 rpm error, without fault.
n
3 EV <CR>:
it questions axis 3 about the maximum error allowed. The answer is: "A3 VELOCITY
ERROR RPM = 20" (if 20 rpm velocity error has been set for axis 3).
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