Thermo Scientific thermoflex, Quick Start Manuals

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ThermoFlex D-1
Thermo Scientific
Appendix D
Analog I/0 and Remote Sensor
Analog I/O Connector Pinout
Install your analog input/output device to the 15-pin female connector on the rear of the chiller. Analog I/O is
activated using the controller, see Section 4.
PIN NAME NOTES DEFINITION
1 DIGITAL GROUND Common round connection for pins 12, 13 and 14
2 RESISTIVITY OUT Optional Analog voltage output 0v = 0 M Ω - cm
10v = 20 M Ω - cm
3 LOW LEVEL Note 1 Dry Relay Contact: Reference to pin 11.
(Only if option chosen) Closes if either level switch is in the “low” position for more than 1 second.
4 CONFIGURABLE RELAY 2 Note 1 Dry Relay Contact: Reference to pin 11.
Closes when any configured fault or warning occurs.
5 PUMP ON Note 1 Dry Relay Contact: Reference to pin 11.
Closes when pump is turned on.
Opens when pump is turned off.
6 ANALOG GROUND Common for analog signals (pins 2, 7 and 15)
7 RESERVOIR TEMP OUT Note 2 Analog Voltage Output 0-10VDC, 10mV/°C, or 4-20mA: Reference to pin 6.
OR EXTERNAL SENSOR This voltage output is proportional to the reservoir fluid temperature:
TEMPERATURE IF Default scale= 0–10V (where: 0V = Low Temp Span, 10V = Hi Temp Span)
EXTERNAL SENSOR Optional Range = 10mV/
O
C. (Ex: 200mV = 20°C) (Max Load @ 10V = 5mA)
ENABLED or 4-20mA, 4mA = low temp span, 20 mA = high temp span (maximum output
current = 5mA @10VDC.
8 LOW FLOW Note 1 Dry Relay Contact: Reference to pin 11.
(Only if option chosen) Closes when a low flow occurs while the pump is on. Note: To allow the pump to get up to
speed at startup, the pump runs for 3 - 5 seconds before the low flow sensor is read.
9 CONFIGURABLE RELAY 1 Note 1 Dry Relay Contact: Reference to pin 11.
(Normally Open) Closes when any of the configured faults occur.
10 CONFIGURABLE RELAY 1 Note 1 Dry Relay Contact: Reference to pin 11.
(Normally Closed) Complement of pin 9 (open when pin 9 is closed).
11 RELAY COMMON Common for all relay contacts (pins 3, 4, 5, 8, 9, 10).
12 REMOTE START Note 3 Connect to pin 1 to allow chiller to be remotely turned on/off through pin 14
ENABLE REMOTE START.
Note 1: All relay contacts (except for Pin 10) are normally OPEN when power is off. Pin 10 contacts are normally CLOSED when power is off. Relay
contacts are rated: 24V AC/DC, 2A, <= 0.08 Ohm maximum each or 5A total for all relays combined, 1mA minimum, switching capacity: 48VA/48W
(Resistive load only).
Note 2: Default = 0-10VDC. These ranges are set by the user.
Note 3: Connect to digital ground (pin 1) using a low resistance connection (gold contact relay).
8 7 6 5 4 3 2 1
15 14 13 12 11 10 9