Sbc Function - Mitsubishi Electric 800 Series Instruction Manual

5.5

SBC function

This function controls activation or release of the mechanical brake in conjunction with the STO function operation activated by
the STO or SS1 command input. (For details of the STO and SS1 functions, refer to
When Pr.S023 SBC brake operation frequency ≠ "0", specifications and operating conditions of motor speed estimation must
be satisfied. (Refer to page 7.)
Pr. Name
Monitoring speed
*1
S001
selection
S004 SS1 deceleration
monitoring time
*1 SBC brake operation
S023
frequency
*2 SBC output shutoff
S024
delay time
*2 SBC brake release delay
S025
time
S026 SBC FB input selection
S027 SBC mismatch
detection time
SX1/SX2 terminal
*4
S051
function selection
*4 SY1/SY2 terminal
S055
function selection
*1 When Pr.S023 ≠ "0", set Pr.S001 = "1". When Pr.S023 ≠ "0" and Pr.S001 = "0 (initial value)", "E.SAF" (fault detail code 41) is displayed after next
power-ON or inverter reset.
*2 Consider the mechanical delay time of the brake to set Pr.S024 and Pr.S025.
*3 The terminal ON state shows that the terminal is conducted (the line is closed), and the OFF state shows that the terminal is not conducted (the
line is open).
*4 If the SBCFB signal is not assigned to input terminals while the SBC signal is assigned to output terminals, "E.SAF" (fault detail code 41) is
displayed after next power-ON or inverter reset.
*5 When functions are assigned to terminals SY1 and SY2, set Pr.S070 SY1/SY2 terminal test pulse diagnosis execution selection and Pr.S071
SY1/SY2 terminal test pulse off time to perform fault diagnosis with test pulse signals. (Refer to
 Basic operation
• The SBC output (SBC) signal turns OFF when the STO function is activated by the STO or SS1 command input.
• The brake is activated when the SBC signal is turned OFF.
• The SBC signal turns ON when the STO state is cleared by the STO or SS1 command input.
• The brake is released when the SBC signal is turned ON.
• The following shows the operation example when the STO function is activated by the SS1 command input.
Initial Setting range
value
0 0
1
5 s 0 to 3600 s
0 Hz 0 to 30 Hz
0.3 s 0 to 5 s
0.3 s 0 to 5 s
0 0, 1
2 s 0 to 5 s
0 0, 6
0 0, 1
page 22 and
Description
Speed monitoring is disabled.
Monitoring is enabled using the estimated speed.
Set the time from when the SS1 function is activated until the
STO function is activated. When Pr.S024 is set, the time set in
this parameter is used as the time from when the SS1 function
is activated until the brake is activated.
The brake is activated when the motor speed is decreased to
the value set in this parameter or lower before the time set in
Pr.S004 elapses after the SS1 function is activated. This
function is disabled when "0" is set in the parameter.
Set the time from when the brake is activated until the STO
function is activated.
Set the time from when the STO state is cleared until the brake
is released.
Select the logic of the Brake feedback (SBCFB) signal for
normal brake operation. The brake feedback signal diagnosis is
performed based on the selected logic (normal condition).
0: OFF (brake operating), ON (brake released)
1: ON (brake operating), OFF (brake released)
Set the time until the fault is determined for the brake feedback
signal diagnosis.
To use the SBC function, set Pr.S051 = "6" to assign the
SBCFB signal.
To use the SBC function, set Pr.S055 = "1" to assign the SBC
*5
output (SBC) signal.
page 21.)
page 23.)
*3
29
5. Safety Sub-Functions
5.5 SBC function
3
4
5
5
5
6
7
8
9
10