OTIS CONTROLLERS DESIGNATION CODING
AC or DC Resistance Control: 2 digit #, a letter, another # and 1 or 2 letters.
2 digit # indicates relitive size of control.
1st letter indicates type of control A=AC power supply - AC switches (relays)
D=DC power supply - DC switches (relays)
N=AC power supply - DC switches (relays)
H= Hydraulic machine - AC power supply - DC switches
single # indicates number of accelerating switches.
0=across the line starting
1=1 accelerating switch. 1 speed AC or 2 speed DC with field control.
2=2 accelerating switches. 1 speed AC or 2 speed DC with field control.
3=3 accelerating switches. 1 speed AC or 2 speed DC with field control.
6=2 speed AC with accelerating switch.
7=2 speed AC without accelerating switch or 2 speed DC with by-pass.
8=2 operating speeds or 2 speed with 2 motors.
2nd letter indicates type of operation
A=operatorless
B=single automatic push button
C=collective push button
D=double button or dual light
E=escalator
J=single push button collective
K=car switch
P=residence elevator, push button
S=signal control
T=two stop collective
W=multi button dumbwaitor
X=two stop dumbwaitor
3rd letter (when used) L=automatic leveling
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