EXCEL 10 W7754K,P,Q,R,S,T,V FCU CONTROLLERS − INSTALLATION INSTRUCTIONS
EN1B-0304GE51 R0916M
9
Table 10. LONWORKS Service LED Behaviors and
Meanings
LED blinking pattern meaning
1 LED remains OFF after power-up.
Defective device hardware.
Suspect power supply
problems, clock problems, or
defective Neuron Chip.
2
LED is lit continuously after first
power-up.
Defective hardware.
3
LED flashes at power-up, goes
OFF, then is lit continuously.
Controller lacks application.
4 LED flashes briefly periodically.
Controller probably ex-
periencing continuous
watchdog resets, or external
memory or EEPROM is
corrupt.
5
LED repeatedly blinks ON for 1 s
and OFF for 1 s.
Controller is unconfigured
but has an application.
6a
OFF 10 s. Afterwards, service
LED turns ON and remains ON,
indicating completion of blanking
process.
Using EEBLANK on a
Neuron 3150 Chip-based
custom node.
6b
OFF 1 s. The service LED is
then lit continuously.
First power-up with a new
PROM on a Neuron 3150
Chip-based customized
node. Application-less
firmware state exported.
6c
OFF = 1...15 s, depending on
application size and system clock.
Service LED then repeatedly
blinks ON for 1 s and OFF for 1 s.
6d
OFF indefinitely (1...15 s to load
internal EEPROM; remains OFF).
7
LED remains OFF after a short
ON duration.
Controller is configured and
running normally.
8
LED flashes ON. Controller has received
WINK command from net-
work. Other physical outputs
are unaffected.
Approvals, Certifications, and Standards
Approvals and Certifications
CE-approved
Certified as per LonMark® Application Layer Guidelines V
3.0, thus interoperable with all other devices in open
L
ONWORKS® networks (incl. 3
rd
-party devices)
EUBAC-certified as follows:
eu.bac
Cert
020706
W7754Q1008:
Temperature Control Accuracy (CA)
W7754P1000, W7754Q1008 with Motorized Actuator
FCU heating mode: 0.5 K
FCU cooling mode: 0.2 K
(min. CA values requested by EUBAC for fan coil unit
applications: ≤ 1.4 K)
W7754R4431, W7754S2230 with Low-Cost Thermal Actuator
FCU heating mode: 0.8 K
FCU cooling mode: 0.9 K
(min. CA values requested by EUBAC for fan coil unit
applications: ≤ 1.4 K)
W7754R4431, W7754T4431 with Floating-Point Actuator
(PID parameters: Xp = 1.5; Tn = 1100; Dn = 600)
FCU heating mode: 0.2 K
FCU cooling mode: 0.1 K
Classification according to EN 60730-1
EN 60730 sub part: EN 60730-2-9
Environmental conditions: For use in home (residential,
commercial, and light-industrial)
environments
Construction: independently mounted control
Action: type 1.C
Rated impulse voltage: 2500 V at 230 V; 500 V at 24 V
Pollution degree: Class 2
Protection against shock: Class 0 (without terminal cover)
Class II (with terminal cover)
Software class: Class A
Classification according to EN 60529
(Degree of protection provided by enclosures)
IP20
Ambient Environmental Limits
Operating temperature: 0 … +50 °C at 5…90% r.H.
Storage temperature: -40 … +70 °C at 5…90% r.H.
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