PID Temperature Controller

ITC-100 User Manual

Version 2.0s

The Inkbird ITC-100 PID Temperature Controller features a dual-display LED screen showing current temperature (PV) and set temperature (SV), along with indicator lights for output status (OUT), alarms (AL1, AL2), and run mode. It has several control buttons below the display.

Brand: Inkbird Tech. Co., Ltd.

Disclaimer: Inkbird has made every effort to ensure the accuracy and completeness of this document. However, contents are subject to revision without notice. Please contact Inkbird for the latest version.

Safety Precautions

Ensure the product is used within its specifications.
Do not touch terminals while power is supplied, as this may cause electric shock.
Prevent metal pieces, wire clippings, or shavings from entering the product to avoid electric shock, fire, or malfunction.
Do not use the product in environments with flammable or explosive gases to prevent explosion hazards.
Never disassemble, modify, or repair the product internally, as this can lead to electric shock, fire, or malfunction.
Be aware that output relays have a limited lifespan. Consider application conditions and use relays within their rated load and electrical life expectancy.

Specification

Mounting Dimension

Front Panel Dimension: DIN (48mm x 48mm)
Cutout Size: 45mm x 45mm

Main Features

Supports multiple Thermocouples and Resistance Sensors (K, S, Wre, T, E, J, B, N, CU50, PT100).
Wide Controlling Range: -50°C to 1300°C (K sensor).
High Accuracy: Displaying and Controlling at 0.1°C; Measurement Accuracy ±0.2%FS.
Control Modes: PID and ON/OFF with High Standard Self-adjusting Function.
Multiple Outputs and Alarm Modes.
Built-in Adjustable Digital Filter to reduce interference.
Self-adjusting Function and Intelligent Control ensure long-term stability.
High Luminance, 0.39" height LED display with an anti-glare panel.
Built-in Switch Power Supply with a wide voltage range and low-power consumption.

Specifications Table

Units	Details
Weight	Approx. 140g
Power Supply Voltage	AC 100-240V ±10% 50/60Hz AC/DC 12-24V ±10% 50/60Hz DC 12-24V ±10%
Operating voltage range	85~110% Rated voltage
Power Consumption	Approx. 5VA (100~240VAC) Approx. 4VA (12~24VAC) Approx. 3W (12~24VDC)
Display Character	PV: 4 digital 9.9mm height Red LED Letters SV: 4 digital 8mm height Green LED Letters
Display Accuracy	±0.2%FS 0.1°C (<1000°C); 1°C (≥1000°C)
Period of Sampling	0.5S
Temperature Compensation	0-50°C
Main Output	Relay Contact Output (ITC-100R): AC250V 3A (Resistive load) ON/NC. Alarm 1 AC250V 3A (Resistive load) ON/NC. Voltage Pulses Output (ITC-100V): DC 12V, 30mA; Alarm 1 AC250V 3A (Resistive load) ON/NC
Life Expectancy of Relay	Mechanical ≥10,000,000 operations Electrical ≥10,000,000 operations
Storage Temperature	-25~65°C (no icy or condensation)
Data Storage	10 year
Mounting Method	Flush mounting and screw terminals
Environmental Conditions	-10~55°C (no icy or condensation), RH 35-85% Humidity

Connection

Dimension (unit: mm)

Shell: A rectangular unit measuring approximately 89mm in width and 74mm in height, with a depth of 8mm.

Mounting Bracket: A bracket designed to secure the unit within a panel, featuring mounting holes.

Panel Cutout: Requires a square opening of 45mm x 45mm, with a minimum panel depth of 60mm.

Installation: Push the instrument into the panel cutout and insert the mounting bracket from the back side. Ensure there are no gaps between the panel and the bracket, then secure with screw caps. Ensure ambient temperature does not exceed specified working temperature, especially when installing multiple instruments.

Connection Diagrams

ITC-100V (Voltage Pulses Output):

Terminal 1 (NC), Terminal 6 (NO): Output
Terminal 11 (SSR): SSR connection
Terminal 3 (AL1), Terminal 8 (+): AL1
Terminal 4 (TC+), Terminal 9 (COM): Power
Terminal 5 (COM): COM

ITC-100R (Relay Contact Output):

Terminal 1 (NC), Terminal 6 (NO): Output
Terminal 11 (COM): COM
Terminal 3 (AL1), Terminal 8 (+): AL1
Terminal 4 (TC+), Terminal 9 (Power): Power
Terminal 5 (COM): COM

Front Panel and Operation

The front panel features a dual LED display: the upper display (PV) shows the Process Value (measured temperature) in red, and the lower display (SV) shows the Setting Value (set temperature) in green.

Status Display LEDs:

OUT: Output pilot lamp.
AL1: Alarm 1 pilot lamp.
AL2: Alarm 2 pilot lamp.
RUN: Manual pilot lamp.

Control Buttons:

[Up Key] (④): Increase value during setting. Press and hold for rapid increase.
[Down Key] (⑤): Decrease value during setting. Press and hold for rapid decrease.
[Move Key] (⑥): When setting temperature or parameters, press to switch between digits or parameters to be adjusted.
[Self-Adjustment Key] (⑦): At normal display, press and hold for more than 2 seconds to start or end the self-adjusting function.
[Shift Key]: At normal display, press for less than 1 second to shift between automatic and manual control modes.
[SET Key] (⑦): At normal display, press briefly to check PV and SV values. Press and hold for more than 2 seconds to enter parameter setting mode.

Operation Process

Input Type (Table 1)

Input Type	Input	Value	Measuring Range
Thermocouple	K	0	-50~1300°C
	S	1	-50~1700°C
	Wr	2	-0~2300°C
	T	3	-2000~350°C
	E	4	0~1000°C
	J	5	0~1000°C
	B	6	0~1800°C
	N	7	0~1300°C
Cu resistance	CU50	20	-50~150°C
Platinum resistance	PT100	21	-200~600°C

Alarm Function Setting (Table 2)

Alarm Output	Alarm Type	ALP Value
AL1 Output	Upper Alarm Limit	0
	Lower Alarm Limit	0
	Maximum Deviation Alarm	0
	Minimum Deviation Alarm	0
AL2 Output	Upper Alarm Limit	1
	Lower Alarm Limit	2
	Maximum Deviation Alarm	4
	Minimum Deviation Alarm	8

Error Display (Fault Diagnosis)

SV Display	Explain	Remedy
orAL Error	Input Sensor Selected Error	Input the correct value consistent with parameters of sensor
	Signal Wire Connected Error	Correct the Connecting Signal Wire
	Sensor Fault	Check the sensor

Operating Instruction

Upon power-on, the PV screen displays the current measured value, and the SV screen displays the current set value. This is the normal status.

If the PV/SV screens display "orAL" alternately, it indicates the input value is out of range (or sensor is open circuit) or the input setting is incorrect.

When an alarm is active, the SV screen displays characters related to the alarms: HiAL (Upper Alarm Limit), LoAL (Lower Alarm Limit), dHAL (Maximum Deviation Alarm), dLAL (Minimum Deviation Alarm).

Checking Output Value: Press the [SET Key] (no more than 1S). If the SV screen displays "A" (e.g., A:100), the status is automatic control output. If the SV screen displays "M" (e.g., M:100), the status is manual control output.

Auto/Manual Switch: Press the [Shift Key] (no more than 1S) to switch between automatic and manual control modes. In automatic control status, the RUN pilot lamp is off. In manual control status, the RUN pilot lamp is on. (Note: This function may be disabled if the setting function is "2: No manual").

Temperature Setting: When the SV screen displays the setting value, press the [Up Key] or [Down Key] to increase or decrease the value. Press the [Move Key] to move the cursor to the digit to be updated. Press and hold the [Up Key] or [Down Key] for rapid value adjustment.

Start Self-Adjusting Function: For initial use, it is recommended to use the self-adjusting function to determine optimal control parameters (M50, P, and T). Press and hold the [Self-Adjustment Key] for more than 2 seconds. The SV screen will display "AT" alternately, indicating the instrument is in self-adjusting status. During this process, the instrument performs position adjustments (2-5 oscillations) and automatically determines PID control parameters. The instrument returns to automatic control status upon completion. To quit self-adjusting prematurely, press and hold the [Self-Adjustment Key] for more than 2 seconds until "AT" disappears from the SV screen.

Note on Self-Adjustment: To use the self-adjusting function again after the initial setup, set the "CtrL" parameter to "2". It is advisable to perform self-adjustment at the most common operating temperature for the system. If setting values change frequently, manual modulation may be necessary.

Parameter Setting and Defining

After power-on, press and hold the [SET Key] for more than 2 seconds to enter setting mode. Use the [Up Key] or [Down Key] to adjust values. Press [SET Key] to confirm and proceed to the next function. The PV/SV screen will return to normal display after setting.

Note: Any modifications made in setting mode will be automatically saved after 10 seconds of inactivity, and the instrument will return to normal status.

Function Setting Table

Code	Name	Description	Setting Range	Unit	Remarks	Factory Default
HI AL	HIAL	Upper Alarm Limit	-1999~+9999	1°C		9999
LORL	LOAL	Lower Alarm Limit	-1999~+9999	1°C		-1999
dHAL	dHAL	Maximum Deviation Alarm	0~9999	1°C		9999
dLAL	dLAL	Minimum Deviation Alarm	0~9999	1°C		9999
dF	dF	Hysteresis	0~200.0	0.1°C		0.3
CtrL	Ctrl	Control Output	0: ON/OFF	S		3
			1/3: PID
			2: Self-adjustment
50.	M50	Integral	0~9999	0.1°C	0: Cancel	1000
P	P	Differential	0~9999	0.01S/°C		500
t	t	Hysteresis Time	1~9999	S		120
Ctl	Ctl	Control Period	1~120	S		4
Sn	Sn	Input Sensor	0~42		Table 1	0
di P	diP	Decimal Point Position	0~3	1 Digital		1
di L	diL	Input Lower Limit Value	-1999~+9999	1 Digital		0
di H	diH	Input Upper Limit Value	-1999~+9999	1 Digital		1000
SC	SC	Sensor Calibration	-199~+999			0
oP1	OP1	Output Mode	0/2: Time Duty 1: 0-10mA			0
OPL	Opl	Output Lower Limit	0~220	1%		0
OPH	Oph	Output Upper Limit	0~220	1%		100
ALP	ALP	Alarm Function	0~31		Table 2	0
CF	CF	System Function	2: Heater 3: Cooler			2
Addr	Addr	Address	0~63			1
Baud	Baud	Baud Rate	0~4800		Filter Effect	9600
dL	dl	Input Digital Filter	0~20			0
run	run	Run Mode	0: Manual			2
			1: Automatic
			2: No Manual
LOC	LOC	Lock Function	0~999		Except LOC and EP1~EP8	40
EP1 EP8	EP1~EP8	8 User-defined Parameters	Select any Parameter from this Table			none

User-defined Parameter

When setting the last eight parameters (EP1-EP8), the PV screen prompts EP1-EP8, and the SV screen displays technical parameter settings. Use the [Up Key] or [Down Key] to cycle through parameters like HiAL, LoAL, dHAL. Press [SET Key] to confirm and enter the next setting. If a user-defined parameter is not needed, set it to "none". Press [SET Key] to set all 8 user-defined parameters, then return to normal status.

Datalock (LOC)

When the LOC setting is not "2", "40", or "808", the instrument allows modification of only 0-8 self-defined parameters and LOC parameters themselves. All parameters can be set when LOC is "2", "40", or "808".

Loc=0: Temperature setting value and EP1-EP8 can be modified.
Loc=1: Data can only be checked, not modified (except LOC parameters).
Loc=2, 40, 808: All parameters can be modified.

Technical Assistance and Warranty

Technical Assistance

If you encounter issues installing or using the thermostat, review this manual thoroughly. For assistance, email cs@ink-bird.com. Replies are provided within 24 hours from Monday to Saturday. Visit www.ink-bird.com for common technical questions.

Warranty

INKBIRD TECH. C.L. warrants this thermostat for one year from the date of purchase against defects in workmanship or materials, provided it is operated under normal conditions by the original purchaser. This warranty is limited to repair or replacement at Inkbird's discretion. The original receipt is required for warranty claims.

INKBIRD is not liable for injury, property damage, or consequential damages arising from the product's use or alleged defects in workmanship.

No other representations, warranties, or conditions, express or implied, statutory or otherwise, apply beyond what is contained herein.

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