Thermo Scientific ThermoFlex10000, Installation, Operation And Maintenance Manual

Page: 184 / 210

Appendix C
ThermoFlex C-3
Thermo Scientific
rELAY
CodE 1
CodE 2
enter
enter
xx
xx
xxxxx
xxxxx
enter
enter
r rtd
xx
xx
OFF
on
enter
enter
OPt
xx
xx
100.0
-50.0
Hi.CtL
Lo.CtL
Hi.CtL
Lo.CtL
enter
enter
enter
enter
r.Start
r SEt
xx
xx
OFF
on
enter
enter
• rELAY is used to configure relay 1 ( CodE 1 ) and
relay 2 ( CodE 2 ), see Tables 1 and 2 on the next page.
For example: To have just the drip pan, 4, and low
temp, 8, error faults enabled for relay 1 you would
enter their sum, 12, at the
CodE 1
display. To have
the tank overflow, 2, the low temp, 16, and high
pressure, 1024, error faults enabled for relay 2 you
would enter their sum, 1040, at the
CodE 2
display.
• r rtd
is used to enable/disable the remote
temperature sensor. See Table 3 for pin out
information.
Note There is no other indication on the chiller that
the remote sensor is enabled.

If the remote temperature probe is enable use
Hi. CtL
and
Lo. CtL
to adjust the internal
temperature range limits When operating with the
remote sensor the chiller’s reaction to changing the
setpoint may result in operation exceeding a fixed
temperature limit resulting in the chiller shutting
down.
When using the remote probe, if an internal range
temperature limit is exceeded the control shifts to
the internal probe using the appropriate limit as the
setpoint. When the internal temperature comes back
inside the limits or the remote temperature gets to its
setpoint, the control shifts back to the remote probe.
The defaults for the high is 100°C and the low is
-50°C. If a default is exceeded the chiller will shut
down.
If this happens changing the internal range setting
a few degrees may prevent the chiller from shutting
down.
•
r.Start
is used to enable/disable the remote start/
stop.
Note Enabling analog I/O remote start/stop disables
the chiller’s local controller start/stop capability.
Enabling analog I/O remote also overrides serial
communications start/stop commands.

Figure C-2 Analog I/0 Loop (1 of 2)
See next page.