Smart Equipment™ Economizer Board Details; Se-Eco1001-0 Economizer Controller - York ZH078 Installation Manual

Figure 28: SE-ECO1001-0 Economizer Controller
Table 14: Smart Equipment™ Economizer Board Details
Board Cover
Label Label
C COM
IN2 ECOFB
R 24V~
C COM
IN1 MAT
POWER POWER
FAULT FAULT
SA BUS SA BUS
C COM
Johnson Controls Ducted Systems
Description
Directional orientation: viewed with the center text of the cover label upright
ANALOG INPUTS Terminal at left on upper edge of economizer board
24 VAC common/0-10 VDC negative for
economizer actuator position feedback
0-10 VDC positive input from Economizer
actuator position Feedback
24 VAC hot supplied for economizer actuator
position feedback
Mixed Air Temperature sensor input from 10KΩ
@ 77°F, Type III negative temperature
coefficient thermistor
Green UCB power indicator
Red networking error and firmware error
indicator
Green UCB SA bus communication
transmission indicator
1
SA BUS
Common for SA BUS power and
communication circuits
Connects through circuit trace to 24V~ IN pin COM
EconDampPos parameter reports input status (0-100%). Used to
meet Cali. Title 24 requirements for economizer actuator position
feedback
Connects through circuit trace to 24V~ IN pin HOT
MAT parameter reports input status (°F/°C), 3.65 VDC reading
MAT (+) to COM (−) with open circuit. Read-only use in current
control revision.
LEDs at left on upper edge of economizer board
Lit indicates 24 VAC is present at 24V~ IN COM and HOT pins
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)
Lit/flickering indicates UCB-to-economizer board SA bus
communication is currently active, off indicates the economizer
board is awaiting SA bus communication
Pin connections at left on upper edge of economizer board
EconCtrlr parameter reports UCB-to-economizer board SA bus
communication status. Negative of the SA BUS communication
circuit to the UCB. Through the unit wiring harness, may continue
on to the 4-stage board and/or fault detection & diagnostics
board
5167515-YIM-H-0518
Function & Comments
39