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12 Travel Direction Change Counter
Note:
• If o4-40 is active and you have not set a password, a TCS alarm [TDCC Setup Alarm] is present.
• During maintenance, log the values for U4-64 to U4-68 and o4-41 occasionally.
If a drive brakes and cannot be powered on anymore, these values cannot be restored. In such a case, a person responsible for elevator
safety must decide if ropes need to be replaced or if values can be estimated.
◆
Counter Reset
To reset the Travel Direction Change Counter (TDCC) after you replaced ropes, enter the limit of bending
changes to TDCC Pres Value [o4-42]. The value entered is in thousands, e.g. when you enter '1' it means 1000
direction changes are allowed.
When you entered the value, the monitors Rem Dir Chg [U4-65, U4-66] will be updated, and 04-42 will be reset
to 0.
◆
Related Parameters and Monitors
■
Added Parameters
Parameter
Operator Display
o4-40
TDCC Enable
o4-41
TDCC Alarm Level
o4-42
TDCC Pres Value
o4-43
TDCC Pswd Set
■
Added Monitors
Parameter
Operator Display
(Hex.)
U4-65
Rem Dir Chg L
(830)
U4-66
Rem Dir Chg H
(831)
U4-67
Total Dir Chg L
(832)
U4-68
Total Dir Chg H
(833)
U4-69
Total TDCC Pres
(834)
U4-70
Last DirChg Pres
(835)
86
Content
Travel Direction Change Counter Enable
Enables the TDCC function:
0 : Disabled
1 : Enabled
Travel Direction Change Counter Alarm Level
Sets the Trip Counter Alarm level. The value is set in units of 1 kilo
(1000).
Travel Direction Change Counter Preset Value
Sets the number of allowable direction changes after a rope change. The
unit is kilo (1k = 1000). The direction counter [U4-66/U4-67] is set to the
input value and the parameter is changed back to 0.
Travel Direction Change Counter Password Setting
Sets the Travel Direction Change Counter password. The password needs
to be entered twice (identically). The active password locks parameters o4-
40 to o4-43 from editing and starts the TDC counting process. The
password can only be set when o4-40 is enabled. When the same password
is entered again, the parameters are unlocked again. The password is not
displayed. A coded value is shown:
0 : Password not set
1 : Password set
2 : Password set and entered (unlocked)
3 - FFFF : Password
Only values 3 to FFFFh are accepted as password.
A set password is not reset by A1-03 initialization (including EEPROM
initialization 9990).
Content
Shows the lower three digits of actual TDCC value. It is reset to 0 after
1000 direction changes.
Shows the remaining upper digits of actual TDCC value.
Shows the lower three digits of total TDCC value. It is reset to 0 after 1000
direction changes.
Shows the remaining upper digits of total TDCC value (1 = 1000 = 1k).
The value saturates at 65535k.
Shows the number of preset operations (includes reset to 0) of the TDCC.
The value saturates at 63. This is intended to uncover possible misuse.
Shows the most recent value, input to o4-42 for resetting the remaining
direction changes counter.
YASKAWA TOEPC710616134G AC Drive L1000A Technical Manual Addendum
Value Range
Default Value
0, 1
0
0k - 10000k
50k
0k - 65535k
0k
0 - FFFF
0
Analog Output
Range/Unit
Scaling
-
0 - 999
-
0k - 65535k
-
0 - 999
-
0k - 65535k
-
0 - 63
-
0 - 65535k
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