11-12 Technical Specifications
590 Series DC Digital Converter
Terminal Information (Control Board)
Terminal
Description
Terminal Function Signal Level Configurable Terminal
Number
TERMINAL BLOCK C
0V (Signal) Zero Volt Reference 0V N/A C1
Thermistor/
Microtherm Input
Motor overtemperature
protection element input
It is good practice to protect DC motors
against sustained thermal overloads by
fitting temperature sensitive resistors or
switches in the field and interpole
windings of the machine. These devices
have a low resistance (typically 200Ω)
up to a reference temperature 125
o
C).
Above this temperature, their resistance
rises rapidly to greater than 2000Ω.
Motor overtemperature sensors should
be connected in series between
terminals C1 and C2. A motor
overtemperature alarm will be indicated
if the external resistance between C1
and C2 exceeds 1.8k Ω ± 200Ω.
Terminals C1 and C2 must be linked if
overtemperature sensors are not used.
N/A C2
Start/Run Input Start/Run
When an input is applied to
this terminal, the main
contactor will close and the
controller will operate
provided there are no
alarms, program stop/coast
stop signals are high and
the controller is enabled.
When the input is removed
the controller will perform a
regenerative stop to zero
speed. A regenerative stop
can only be achieved by a
4 quad regenerative
controller; the 2 quad non-
regenerative controller will
coast to zero speed.
+24V = True/Run
0V (o/c) = False/Normal Stop
Threshold + 16V
NO C3
Jog Input
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