Siemens SIMOTRAS 6SG7050 - Page 306

Function descriptions 01.04
9-8 SIEMENS AG 6SG7000-0BA76
SIMOTRAS HD Operating Instructions
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
min
(P370, P371)
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
= 0
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
On
Shutdown
Controller not enabled
P088
Switch-on/Shutdown
P087
Internal controller enable
Internal setpoint enable
n < n (P370,P371)
Actual speed value
Brake control signal
(holding brake)
min
Controller enabled
Setpoint enabled
Setpoint reached
n > n
min
Release brake
Setpoint =0
n < n
min
Setpoint reached
Close brake
P319
P087 Brake release time(negative in this case)
P088 Brake closing time
P319 Delay of setpoint enable
− When n < n
min
(P370, P371) is reached for the first time, an internal interlock is activated which
prevents the drive from attempting to brake again if the motor is turned by external forces. The
n < n
min
signal then disappears again.
− 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.