Configuration and Troubleshooting
2-24 Manual # 42-02-2P26
DCF
Door Close Function @ SYSTEM DIAG > Door Control
DCL
When doors are fully closed, this input should be at zero volts (low). Door Close Limit @
SYSTEM DIAG > Door Control
DETS
This limit switch is required to slow down the elevator in a manner that will prevent the
car/counterweight from striking the reduced-stroke buffer at or below rated buffer speed.
Down Emergency Terminal Switch @ SYSTEM DIAG > Landing System
DFLT
A signal that informs the controller that the drive has failed. Drive Fault input to controller
@ System IO > System Inputs
DLAB
Bottom door lock that will be bypassed during bottom floor hoistway access operation.
Door Lock Access Bottom @ System IO > System Inputs
DLABB
Door Lock Access Bottom to PLD
DLAT
Top floor door lock that will be bypassed during top floor hoistway access operation. Door
Lock Access Top @ System IO > System Inputs
DLATB
Door Lock Access Top to PLD
DLK
DLK will be active when both car and hoistway door locks are made. Door Lock @ PLD
DIAG > PLD Flags, see HDLK (Hall), GDLK(GATE) and on CPU - LOCKS
DLM
Engaged when the car enters the leveling zone 6” above floor level. Down Level Marker @
System IO > System Inputs
DLMS
When intermediate door locks are made DLMS will be active (high). Door Lock Middle
String @ PLD DIAG > PLD Inputs
DLMSB
Door Lock Middle String to PLD
DLN (1/2)
Door Line voltage
DOB
Activating DOB when the car is floor level will cause the doors to open when on normal
automatic operation. Door Open Button @ System IO > Programmed Inputs
DOF
This output is asserted to activate the door open relay that will cause the doors to open.
Door Open Function (signal) @ System IO > System Outputs
DOL
When the doors are fully open the DOL limit will go low (0 volts). It is high otherwise. Door
Open Limit @ System IO > Programmed Inputs
DPM
Door position monitor limit switch input activates approximately 2” before door lock and is
used to monitor the lock condition of the doors. Door Position Monitor @ System IO > Pro-
grammed Inputs
DRDY
DRDY is a signal from the drive that it is ready to operate. Drive Ready (input to controller)
@ System IO > System Inputs
DRE
The drive tells the controller that it has control of the motor so it is safe to move the car.
Drive Enable (output from controller) @ System IO > System Outputs
DREB
Drive Ready Enable (from processor B)
DRO
DRO tells the controller that it is outputting current to the motor. Car should be moving.
Drive On (input to controller) @ System IO > System Inputs
DSL
As a backup to the normal slow down means, the slowdown limit switches remove power
from the high speed circuits to slow down car. Down Slow Limit @ System IO > System
Inputs, see flags DSL1/DSL2
DTL
Normally assigned as the Down Normal Terminal Limit that prevents the car from going on
to the final limit switch. Down Terminal Limit @ System IO > System Inputs
DZ
The DZ/DZF/DZR signal that we are within 3” of floor level. Doors will not open unless this
signal is active. Door Zone @ SPA DIAG > SPA Flags and SYSTEM DIAG > Landing System
and SPB DIAG > Flags
EB
Emergency Brake @ SPB DIAG > SPB Flags
EB1B
EB1 solid state device enable from SPB
EB2A
EB2 solid state device enable from SPA
EB2BP
EB2 solid state device enable from PLD
Table 2.4 Acronym Descriptions and Memory Locations
Acronym
Description and Memory Location
