Magnetek TM7310rev01 Benutzerhandbuch

 

1.  Motor field current is at Stand-By during 

drive idle.  The No Faults relay is active.  
Full-Field and Run command signals are 
OFF.  Motor contactor Safety circuits may 
be open or closed.  The DC bus will 
remain charged with regulated voltage as 
long as the drive is providing motor field 
current. 

2.  A Field Enable Command, programmable 

by FLD ENA SRC (C1), is sent to the 
drive.  If the DC bus is not pre-charged, a 
pre-charge cycle will be completed before 
motor field current is restored.  See 
Quattro Pre-Charge on page 22 for timing 
information of the Pre-Charge circuit.  
Motor field current will go to the Full-Field 
value in preparation to produce motor 
torque. 
 
 
 
 
 
 
 
 
 
 
 
 

3.  Pre-Torque command value is sent to the 

drive.  It must be available before a run 
command is given.  If the Pre-Torque 
Latch is used, see Pre-Torque Latch (C1), 
it can be placed inactive depending on the 
settings of Pre-Torque Latch Clk (C1).  If 
latching is not used, it must remain active 
until the SPD REG RLS output is active.  
Safety circuit relays are closed making 
power available to the contactor coil 
circuit. 

 
 
 
 
 
 
 
 
 
 
 
 
 
 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
4.  Once the regulators are released, motor 

current starts at pre-torque amperes.  The 
velocity regulator starts at zero speed.    (All 
conditions of 3. must be present and motor 
field current must be greater that the 
sensing threshold before the drive will Start.  
This is noted by the output Flux Confirm 
(programmable by Flux Cnfrm Level (A6)). 

Field Enable 

5.  Drive activates elevator Brake relays, if 

programmed to do so (or the car controller 
does it externally). 

Stndy Fld 

Motor Field 

Full Fld 

6.  Drive follows the external or internal 

velocity profile via the programmed 
accel/decel rate as programmed during the 
remainder of the elevator run cycle. 

FLUX CFRM 
(logic output) 

 

Stand-by On

Pick Contactor 

Drive Enable 

(input) 

Pre-charge Cnfrm 

Pre-charge 

Speed Reg Release 

Speed Ref 
Release 

Run Command
(input) 

Brake Release 

 

Boost On Confirm  

Flux Confirm

No Faults

Field  
Control 
On  

Field Enable (input) 

Contact Cfirm  

Boost On

LATCH 

Drive Enable 

7.  When at the next landing...the Drive (or 

car controller) de-activates elevator Brake. 

Run 

8.  After the Brake has set, the Run command 

is removed causing... 

9.  Reference speed to be clamped to zero. 
10.  Motor torque ramps down to zero, then the 

Motor contactor is opened. 

 
 
 
 
 
 
 
 
 

SPD REG RLS (logic output)

Run 

Brake Relay 

Torque 

Motor Contactor 

Pre-Torque 

11.  While idle, motor field current reference will 

drop to Stand-By, after the Full-Field timer 
expires.  Safety circuit relays may (or may 
not) open to remove contactor-actuating 
power. 

Run 

Safety Chain 

CONTACT 
CFRM (input) 

12.  A DSPR time-out may occur while field 

current is at stand-by.  In that case motor 
field current goes to zero and the AC main 
power contactor to the drive is opened.  A 
pre-charge cycle and power on recovery 
will occur on the next command to re-
establish motor field current. 

 
 
 
 
 
 

SPD REG RLS 
(output) 

21