Instruction manual

3736
Special Functions
Figure 14. Wiring Diagram for Remote Setpoint
Select Option
+
0-5v/1-5v
0-20ma/4-20ma
ENABLE
SWITCH
10K
Remote
voltage/current
Analog setpoint input
Analog remote
setpoint potentiometer
with enable switch
0-5 V/1-5 V
0-20 mA/4-20 mA
CW
Special Functions
When installed, this option provides the user with a method
of inputting several types of analog signals to the controller,
typically 1-5 volts or 4-20 milliamps, although it is also capa-
ble of 0-5 volts or 0-20 milliamps in the unsuppressed mode.
The primary purpose of this feature is to provide an auxiliary
analog Second Setpoint function for control of Setpoint Value
by remote computer, analog potentiometer or other source.
The analog input value replaces the primary digital (front
panel keyed-in value) when the switch input associated with
the module is closed. The option also provides a 5 volt
excitation for the remote potentiometer (see wiring diagram).
OPTION ORDERING CODES
SA
1
Switch Closed & 0-5 V dc or (500 - 10 Kohm) Potentiometer signal input
SB
1
" " 1-5 V dc
SC
2
" " 0-20 mA dc
SD
2
" " 4-20 mA dc
The above options require an external switch on pins 14 & 15 and a remote
signal on pins 12 & 13, to change to the second setpoint value.
SE Second Setpoint Switch (front panel)
1
INPUT IMPEDANCE= 20K ohms
2
INPUT IMPEDANCE = 250 ohms