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Innovation - Edge [i] Installation, Operation, Maintenance Manual
CHAPTER 2
– INSTALLATION
OMM-0143_A
• GF
-216
•
9/6/2019
Technical Support
•
(800) 526-0288
•
Mon-Fri, 8 am - 5 pm EST Page 30 of 170
2.12.5 ANALOG IN Terminals
The ANALOG IN terminals (+ & -) are used when an external signal is used to change the unit
’s
setpoint or air/fuel valve position. There are four signal types:
•
4 to 20 mA
•
0 to 20 mA
•
1 to 5 VDC
•
0 to 5 VDC
The factory default setting is
4 to 20 mA
, however this can be changed in the
Remote Signal
parameter in
Main Menu
→
Advanced Setup
→
Unit
→
Application Configuration
(note,
Operating Mode
must equal
Remote Setpoint
).
If voltage rather than current is selected as the drive signal, a DIP switch must be set on the
Interface Board, located inside the Edge Controller. Refer to
for information on setting DIP switches. If
Remote Signal
is set to either
4 to 20 mA
or
0
to 20 mA
, DIP switch #4 in block SW1 must be set to
mA
. If
Remote Signal
is set to
1 to 5
VDC
or
0 to
5 VDC,
DIP switch #4 must be set to
V
.
All supplied signals must be floating (ungrounded) signals. Connections between the source
and the Heater’s I/O Box must be made using twisted shielded pair of 18–22 AWG wire such as
Belden 9841. Polarity must be maintained and the shield must be connected only at the source
end and must be left floating (not connected) at the
unit’s I/O Box.
Whether using voltage or current for the drive signal, they are linearly mapped to a 40°F (4.44
°C) to 240°F (115.6 °C) setpoint or a 0% to 100% air/fuel valve position. No scaling for these
signals is provided.
2.12.6 VALVE FEEDBACK Terminals
The Valve Feedback terminals are used when the Sequencing Isolation Valve Feedback option
is selected. The Valve Feedback signal is connected to the “Valve Fdbk” terminals and is used
to confirm that the valve has properly opened or closed. If the Valve Feedback signal does not
match the Valve-Open or Valve-Close command for the time defined in the "Valve Fdbk timer"
entry, the controller will proceed as follows:
(a) If the valve fails with the Valve Stuck Open fault, the
Valve Stuck Open
message will be
displayed and the unit will remain active.
(b) If the valve fails with the Valve Stuck Closed fault, the
Valve Stuck Closed
message will
be displayed and the unit will shut down.
NOTE:
If the Valve Feedback option is used, Shorting Jumper #JP2 on the I/O Board will be inserted
at the factory.
2.12.7 SHIELD Terminals
The two SHIELD terminals are used to terminate any shields used on sensor wires connected to
the unit. Only shields must be connected to these terminals.
2.12.8 ANALOG OUT Terminals
The two ANALOG OUT terminals (+ & -) output from 0 to 20 mA and may be used to monitor
Setpoint, Outlet Temperature, Valve Position 4-20 mA, Valve Position 0-10v or be set to OFF.
Default setting in the Edge Controller is Valve Position 0-10 v and settings behave as follows:
1. 0-10VDC
must
be selected for the voltage output used by the controller to modulate the
combustion blower via the I/O Box terminals labeled
VFD/BLOWER
(Section 2.12.11).