Nordson freedom - Hose Interface Board; Hose Interface Board (contd)

Troubleshooting
7-43
Part 1123087_02
 3/2014 Nordson Corporation
Hose Interface Board
See Figure 7‐24.
Table 7-4 Hose Interface Board LEDs
Designation Description Normal Operation
Abnormal
Operation
Corrective Action
DS1 Downstream power—
indicates if a downstream
device connected by
communications cable is
supplied power
Off at power on,
then turns green
Always off Check
communications
cables and
connections
Remove/replace hose
interface board
DS2 Termination—indicates
when the on-board bus
termination resistor is on
Green (on) during
power on and when
no downstream
device is
connected (default
configuration)
Off when a
downstream device
is connected
Green when a
downstream device
is present and
powered
Check
communications
cables and
connections
Remove/replace hose
interface board
DS3 Hose interface board
power—indicates that
power is on
Green (on) Off Verify upstream
device has enabled
downstream power
Verify
communications
cables and
connections
Remove/replace hose
interface board
DS4 Applicator input 3—
indicates when an
applicator input signal is
applied
Green when an
applicator signal is
applied
Off when no
applicator signal is
present
On when applicator
signal should not
be applied
Verify voltage is within
limits
Verify proper
connection
Remove/replace hose
interface board
If green when
applicator signal
should not be present,
verify proper
connection
Continued...