Installation manual

User Interface
900M050U00  Athena Controls, Inc. 2-7
2.3.2 On 1ZC Controller
The end of the 1ZC controller contains six LEDs (above the terminal strip) that light under
specific circumstances. See the illustration and table below for the function of each LED.
LED Location Function
sensor error above terminal 2 Lit when the sensor is disconnected, or the input
signal is out of range, or the loop break time is
exceeded. While the sensor error LED is lit, the
outputs are in the state you configured using the
failsafe output parameters as described in 12.2.
RXD (receive) above terminal 4 When using MODBUS this LED is lit while the
controller receives a message from the host. When
using Multi-Comm, this LED is lit whenever the
controller detects network traffic.
TXD (transmit) above terminal 5
When using MODBUS or Multi-Comm, this LED is lit
while the controller sends a message to the host.
output 1 between terminals
6 and 7
Lit while output 1 is energized.
output 2 between terminals
8 and 9
Lit while output 2 is energized.
power/run
between terminals
10 and 11
Blinks while power is applied and while unit is running
(heartbeat).