Accudyne Industries Milton Roy Milroyal Series, Инструкция по эксплуатации

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10 Installation, Operations & Maintenance Manual
SECTION 2 - INSTALLATION
2.7.2 Input Signal
The input signal, used to control the ECC, can
be either 4-20 mA or 1-5 VDC. A five-position Dip
switch, SW2 ( Figure 11 , located on the top of the
circuit board) selects the control signal used by
the operator. The factory sets SW2 for the model
ordered and should not need changed. Position 1
(Table 10) of SW2 sets the input signal. Position 2
sets the movement of the ECC after unintentional
loss of the control signal. Position 3 and 4 sets
the ECC for use with a pump or valve and should
always be set to 3-OFF and 4-ON for the pump
mode. Position 5 is not used.
2.7.3 Feedback Output Signal
A position output, proportional to ECC position,
is used for remote position indication. A current
of 4-20 mA or a voltage of 1-5 VDC is available
between MONITOR (J5-4) and COMMON (J5-3).
Feedback zero and feedback span adjustments
(Figure 11) are provided to fine tune the output
(see calibration instructions). DIP switch SW3
(Figure 11) selects the feedback output signal. Use
of the output signal is optional.
2.7.3.1 Feedback Output Signal 4-20 mA
NOTE
Do not connect the 4-20 mA output to a circuit
with greater than a 500 ohm load.
Set SW3 per Table 11 for a 4-20 mA feedback
signal.
2.7.3.2 Feedback Output Signal 1-5 VDC
NOTE
Do not connect the 1-5 VDC output to a circuit
having less than 250 ohms impedance.
Set SE3 per Table 11 for a 1-5 VDC feedback
signal.
Figure 5. Circuit Board Connectors J4 and J5
INPUT SWITCH POSITION
1 2 3 4 5
Input Signal of
4-20 mA
ON
Input Signal of
1-5 VDC
OFF
Hold Position on
Loss of Control
Signal
ON
Return to Lower
Limit on Loss of
Control Signal
OFF
Pump Mode
(limits absolute)
OFF ON
Valve Mode
(limits floating)
ON OFF
Not Used NC
Table 10. SW2 DIP Switch Settings
Table 11. SW3 DIP Switch Settings
OUTPUT SWITCH POSITION
1 2 3 4 5
Output Signal of
4-20 mA
ON ON OFF OFF OFF
Output Signal of
1-5 VDC
OFF OFF ON ON ON