Siemens SIMOTRAS 6SG7050 Operating Instructions Manual page 306

Function descriptions
Sequence of operations for switching on drive:
1. Enter the "Switch-on" command (e.g. via terminal "Switch-on/shutdown")
2. The converter exits operating state 07
3. Any "line contactor" present will pull in if controlled via B0124
If "Enable operation" signal is applied:
5. With a positive brake release time (P087), output a "Release holding or operating
brake" signal (binector B0250 = 1) and wait for P087 to run down in operating state o1.0,
with a negative brake release time (P087 negative), go to step 6 immediately, brake
remains closed (binector B0250 = 0)
6. Ramp-function generator, n and I controllers are enabled
7. When a negative brake release time (P087) has run down, output signal "Release holding or
operating brake" (binector B0250 = 1).
Sequence of operations for shutting down drive:
1. Enter the "Shutdown" command (e.g. via terminal "Switch-on / shutdown")
2. Decelerate along ramp-function generator ramp
3. Wait until n < n
4. Output signal "Close holding or operating brake" (binector B0250 = 0)
5. Wait for brake closing time (P088) to run down
6. Input i
set
7. Ramp-function generator and n controller are disabled
8. The pulses are disabled when I = 0
9. Any "line contactor" present will drop out if controlled via B0124
10. The converter reaches operating state o7.0 or higher
Switch-on/Shutdown
Internal controller enable
Internal setpoint enable
n < n (P370,P371)
min
Actual speed value
Brake control signal
(holding brake)
P087 Brake release time(negative in this case)
P088 Brake closing time
P319 Delay of setpoint enable
− When n < n
prevents the drive from attempting to brake again if the motor is turned by external forces. The
n < n signal then disappears again.
min
− Changing the parameter setting between level and edge triggering affects the "Switch-on",
"Shutdown" and "Crawl" commands.
− The "Switch-on" and "Crawl" commands are applied alternately when edge triggering is selected,
i.e. a "Switch-on" edge at terminal 37 cancels a "Crawl" function triggered beforehand, and a
"Crawl" edge at a binector selected in P440 cancels an active "Switch-on" edge.
− The converter cannot be restarted automatically after a brief failure of the electronics power supply
when edge triggering is selected.
9-8
(P370, P371)
min
= 0
P319
P087
(P370, P371) is reached for the first time, an internal interlock is activated which
min
On
Controller enabled
Setpoint enabled
n > n
min
Setpoint reached
Release brake
Shutdown
Controller not enabled
Setpoint =0
n < n
min
Setpoint reached
Close brake
P088
SIEMENS AG 6SG7000-0BA76
SIMOTRAS HD Operating Instructions
01.04