Thermo Scientific ThermoFlex Manual De Instrucciones página 193

Appendix D
PIN NAME
13 REMOTE SETPOINT
ENABLE
14 REMOTE START
15 REMOTE SETPOINT
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).
Note 4: Remote setpoint must be enabled, pin 13
RS232 RS485
A I/O REMOTE
SENSOR
Figure D-1 Analog I/0 Connector
D-2 ThermoFlex
NOTES DEFINITION
Note 3 Connect to pin 1 to allow the setpoint to be changed remotely through pin 15
REMOTE SETPOINT.
Note 3 Connect to pin 1 to turn chiller on. Disconnect to turn chiller off.
Note: Pins 1 and 12 must be connected to allow operation from this pin.
Note 2, 4 Analog Voltage Input 0-10VDC, 10mV/°C, or 4-20mA: Reference to pin 6.
Apply a DC voltage to this pin to adjust the setpoint:
Default Range = 0 – 10V (where: 0V = Low Temp Span, 10V = Hi Temp Span)
(Input Impedance > 600K)
Optional Range = 10mV/
or 4-20mA, 4mA = low temp span, 20 mA = high temp span.
WARNING
Never apply line voltage to any of the connections.
When making your connection to the ThermoFlex Analog I/0
connector, in order to comply with the EMC directive:
• Use a shielded I/0 cable
• Connect the remote end of the cable shield to earth ground.
• Connect cable shield to ThermoFlex end connector.
A I/0 15-pin D-sub
Connect shield to ThermoFlex connector
C. (Ex: 200mV = 20°C) (Max Input Voltage = 10VDC,
O
15 conductor cable with shield

Connect shield to earth ground
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