HTC4000 TEMPERA
TURE CONTROLLER
www.teamwavelength.com
© 2012
HTC4000-62400-B
PAGE 4
Resistor value of 0
Ω
to 1 M
Ω
between pins 1 & 2 limits maximum output current.
Short pins 2 & 3 for bipolar operation. Bipolar operation allows current to flow in
both directions, and is required when using the controller with TECs.
3.675 Volt Reference < 50 ppm stability (15 ppm typical)
Measurement ground. Low current return used only with pins 6, 7, & 8. Internally
shorted to pin 10.
Temperature voltage monitor. Buffered measurement of voltage across
& Sensor–. [1 k
Ω
output impedance]
Setpoint voltage monitor. Buffered measurement of the setpoint input (pin 8).
Remote Setpoint voltage input. Input impedance = 1 M
Ω
.
Range: 0 to V+ - 1.3 V. Damage threshold: Setpoint < -0.5 V or Setpoint > V+.
Supply voltage input. +5 V to +12 V.
Power Supply Ground. Used with pin 9 for high current return.
TEC+ & TEC- supply current to the TE module. With NTC sensors, connect TEC+
to positive lead of TE module. With PTC sensors, connect TEC- to positive lead
of TE module.
A sensor bias current will source from to Sensor- if a resistor is tied
across R
BIAS
+ and R
BIAS
-. Connect a 10 k
Ω
resistor across & Sensor-
when using an AD590 temperature sensor. See page 7, step 4.
Resistance between pins 15 & 16 selects sensor current from 1
µ
A to 10 mA.
Range is 0
Ω
to 1 M
Ω
.
Resistance between pins 17 & 18 selects Proportional Gain between 1 & 100.
Range is 0
Ω
to 495 k
Ω
.
Capacitance between pins 19 & 20 sets the Integral Time Constant between
0 and 10 seconds. 0 seconds (OFF) = 1 M
Ω
resistor
0.1 to 10 seconds = 0.1
µ
F to 10
µ
F.
PIN DESCRIPTIONS
LIMIT-
LIMIT+
PID OUT
V REF OUT
COMMON
ACT T MONITOR
SET T MONITOR
SETPOINT INPUT
V+
GND
TEC+
TEC-
SENSOR-
R
BIAS
+
R
BIAS
-
R
PROP
+
R
PROP
-
C
INT
+
C
INT
-
FUNCTION
PIN
PIN NO.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
