Connections - ILX Lightwave LDT-5416 User Manual

Connections

Temperature Control Output: A 15-pin D-Subminiature connector is located on the back panel of
the instrument. The connections for each terminal are shown below.
The TE drive current is available at the 15 pin connector. Pins 1 and 2 and pins 3 and 4 are tied
together internally. Pins 1 and 2 source current while cooling and sink current while heating. Pins 3
and 4 sink current while cooling and source current while heating.
An NTC Thermistor is required to sense the load temperature and must be connected between pins
7 and 8.
An external resistor may be used to control the setpoint resistance; this resistor must be connected
between pins 5 and 6. The SET RESISTANCE switch must be in the EXT position in order to use the
external resistor as a setpoint, otherwise the setpoint is controlled by the front panel knob.
The control signal on pin 10 provides approximately a 1 V/A signal referenced to pin 9, which can be
used to drive an isolated booster current supply.
Pins 14 and 15 provide the ability to power an external fan through the 15-pin DSUB connector.
This circuit can provide up to 100 mA at a nominal voltage of 12 VDC. This feature includes
current limiting and over-power shutdown for the external fan.
November 2016
LDT-5416
PIN NUMBER
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Figure 2.1 – LDT-5416 Output Connector
6
CONNECTION
TE Module (+)
TE Module (+)
TE Module (-)
TE Module (-)
External Setpoint
External Setpoint
Sensor (+)
Sensor (-)
Analog Ground
Control Signal
N/C
N/C
N/C
Fan (+)
Fan (-)
LDT-5416