1133391-YIM-A-1014
Johnson Controls Unitary Products
33
Figure 25: SE-ECO1001-0 Economizer Controller
Table 13: Simplicity SE Economizer Board Details
Cover Label
Description
Function & Comments
Directional orientation: viewed with the center text of the cover label upright
ANALOG INPUTS Terminal at left on upper edge of economizer board
C
COM
24 VAC common/0-10 VDC negative for
economizer actuator position feedback
Connects through circuit trace to 24V~ IN pin COM
IN2
ECOFB
0-10 VDC positive input from Economizer
actuator position Feedback
EconDampPos parameter reports input status (0-100%). Used to
meet Cali. Title 24 requirements for economizer actuator position
feedback
R
24V~
24 VAC hot supplied for economizer actuator
position feedback
Connects through circuit trace to 24V~ IN pin HOT
C
COM
Mixed Air Temperature sensor input from 10K
Ω
@ 77°F, Type III negative temperature
coefficient thermistor
MAT parameter reports input status (°F/°C), 3.65 VDC reading
MAT (+) to COM (
−
) with open circuit. Read-only use in current
control revision.
IN1
MAT
LEDs at left on upper edge of economizer board
POWER
POWER
Green UCB power indicator
Lit indicates 24 VAC is present at 24V~ IN COM and HOT pins
FAULT
FAULT
Red networking error and firmware error
indicator
1/10th second on/off flashing indicates a networking error
(polarity, addressing, etc.) or a firmware error (likely correctable
with re-loading from USB flash drive)
SA BUS
SA BUS
Green UCB SA bus communication
transmission indicator
Lit/flickering indicates UCB-to-economizer board SA bus
communication is currently active, off indicates the economizer
board is awaiting SA bus communication
