Page
66
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SK2019 FCSD(H)-V/P-ECM-001
Control Specifications: Flexible Function PCB
–
EC-W1 Control
Features
•
Condensate management with valve protection and NC alarm contact.
•
Integrated fan relays for zone control applications.
•
ON/OFF thermostat input and low-voltage modulating fan speed input flexibility.
•
Simple error diagnostic and LED error display.
I/O Port Definitions
I/O
Code
2-Pipe
4-Pipe
Analogue input
Coil temperature sensor
AI1
Cooling / heating coil sensor
(Ti1)
Cooling only coil sensor
(Ti1)
Voltage input
High fan speed
H
230VAC input signals from wired thermostat.
Medium fan speed
M
Low fan speed
L
Phase
L1
External 230VAC power supply connection to the PCB.
Neutral
N1, N2
Earth
GND
Signal Input
Modulating signal
+/-
Low voltage modulating signal input (standard 0~5VDC,
S1=Open, optional 0~10VDC, S1=Closed).
Digital input
Programming interface
TTL
Low voltage digital signal input for board programming.
Float switch
Float
Voltage-free (NC)
Voltage output
Water pump
PUMP
Voltage output (L)
EC motor
CN4
5-wire connection
Stepping motor
CN1, CN2
Low-voltage output
Digital output
LED display
X-DIS
Low-voltage output
Voltage-free output
Alarm
ALARM
Voltage-free alarm contact:
(a) Standard configuration is (NC) and (NO).
Onboard Configurations
The PCB can be configured for different modulating signal inputs.
Refer to jumper configuration table below.
Code
State
Description
S1
Open
PCB configured for 0~5VDC modulating signal input.
S1
Closed
PCB configured for 0~10VDC modulating signal input.
S3
N/A
Reserved
S4
N/A
Reserved
Summary of Contents for FDLA-09
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Page 27: ...Page 26 of 51 SK2018 GLOBAL FDLA V P AC 001 Configuration Settings...
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