84 Chapter 7 535 User's Manual
Applications
Figure 7.11
Combinations of Closed Digital
Inputs for Each Setpoint (based on
BCD logic)
X=closed contact
0=open contact
NOTE: To take advantage of multiple
setpoints, make sure that the SP
NUMBER parameter in the SPECIAL
menu is set to a value greater than 1.
5. Set parameters LOW RANGE:X and HIGH RANGE:X for the first retrans-
mission output, to define the range of the transmitted signal in engineering
units. This can be useful in matching the input range of the receiving de-
vice.
6. For any other retransmission output, continue to scroll through this menu
and set the TYPE:X, LOW RANGE:X and HIGH RANGE:X for the second
retransmission output.
H. DIGITAL INPUTS
Digital inputs can be activated in three ways: A switch (signal type)—the rec-
ommended type, a relay, or an open collector transistor.
Digital inputs are only functional when that option is installed (via hardware).
The controller detects the hardware type, and supplies the appropriate soft-
ware menus (see the section on parameters in Chatper 5). There are 14 con-
tact types for the up to 5 digital inputs.
Hardware Configuration
• This optional feature is only available if ordered originally from the factory,
Product #535xxxxxxDx00. The (up to ) five digital inputs share a common
ground.
Software Configuration
1. Go to the CONFIG. menu.
2. Set parameters CONTACT:1 through CONTACT:5 (only those available
will shown) by assigning the desired function to each output. Choices are:
• SETPT 1-8
(For CONTACT:1 only) Allows the controller to use the first four digital
inputs to select a setpoint (see Figure 7.11). If the state of these in-
puts remains constant, the controller will continue to use the selected
setpoint unless overridden. Override the set of digital inputs by se-
lecting a different setpoint (by using SET PT key or through commu-
nications), or by using the fifth digital input to select the remote or
2nd setpoint. To “rearm” this set of digital inputs, the DIN combina-
tion must change.
•
REM. SETPT.
Closing input changes active setpoint to remote setpoint. Opening
reverts controller to previous setpoint. Override by selecting a dif-
ferent setpoint via the SET PT key, a communications command, or
Setpoints DIN 1 DIN 2 DIN 3 DIN 4
SP XO OO
SP2 OX OO
SP3 XX OO
SP4 OO XO
SP5 XO XO
SP6 OX XO
SP7 XX XO
SP8 OO OX
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