8 Digital Temperature Controllers E5CN/E5CN-U
■ Characteristics
Note: 1. The indication of K thermocouples in the −200 to 1300°C 
range, T and N thermocouples at a temperature of 
−100°C 
max., and U and L thermocouples at any temperature is 
±2°C ±1 digit maximum. The indication accuracy of the B 
thermocouple at a temperature of 400
°C max. is not 
specified. The indication accuracy of the R and S 
thermocouples at a temperature of 200
°C max. is ±3°C ±1 
digit max.
2. “EU” stands for Engineering Unit and is used as the unit 
after scaling. For a temperature sensor, the EU is 
°C or °F.
3. When robust tuning (RT) is ON, the differential time is 0.0 to 
999.9 (in units of 0.1 s).
4. B, R, and S sensors: 0.2
°C/Ω max. (100 Ω max.)
■ USB-Serial Conversion Cable
Note: A driver must be installed in the personal computer. Refer to 
installation information in the operation manual for the 
Conversion Cable.
■ Communications Specifications
Note: The baud rate, data bit length, stop bit length, and vertical 
parity can be individually set using the Communications Setting 
Level.
Indication accuracy Thermocouple: (See note 1.)
E5CN: (
±0.5% of indicated value or ±1°C, 
whichever is greater) 
±1 digit max.
E5CN-U: (
±1% of indicated value or ±2°C, 
whichever is greater) 
±1 digit max.
Platinum resistance thermometer:
(
±0.5% of indicated value or ±1°C, 
whichever is greater) 
±1 digit max.
Analog input: 
±0.5% FS ±1 digit max.
CT input: 
±5% FS ±1 digit max.
Hysteresis Models with thermocouple/platinum resistance 
thermometer (multi-input) input: 
0.1 to 999.9 EU (in units of 0.1 EU)
Models with analog input:
0.01 to 99.99% FS (in units of 0.01% FS)
Proportional band (P) Models with thermocouple/platinum resistance 
thermometer (multi-input) input: 
0.1 to 999.9 EU (in units of 0.1 EU)
Models with analog input:
0.1 to 999.9% FS (in units of 0.1% FS)
Integral time (I) 0 to 3999 s (in units of 1 s)
Derivative time (D) 0 to 3999 s (in units of 1 s) (See note 3.)
Control period 0.5, 1 to 99 s (in units of 1 s)
Manual reset value 0.0 to 100.0% (in units of 0.1%)
Alarm setting range
−1999 to 9999 (decimal point position depends on 
input type)
Sampling period 250 ms
Affect of signal source 
resistance
Thermocouple: 0.1
°C/Ω max. (100 Ω max.) (See 
note 4.)
Platinum resistance thermometer: 0.4
°C/Ω max. 
(10 
Ω max.)
Insulation resistance 20 M
Ω min. (at 500 VDC)
Dielectric strength 2,000 VAC, 50 or 60 Hz for 1 min (between 
terminals with different charge)
Vibration 
resistance
Malfunction
10 to 55 Hz, 20 m/s
2
 for 10 min each in X, Y, and Z 
directions
Destruction 10 to 55 Hz, 0.75-mm single amplitude for 2 hrs 
each in X, Y, and Z directions
Shock 
resistance
Malfunction
100 m/s
2
 min., 3 times each in X, Y, and Z 
directions
Destruction
300 m/s
2
 min., 3 times each in X, Y, and Z 
directions
Weight E5CN Controller: Approx. 150 g, Mounting Bracket: 
Approx. 10 g
E5CN-U Controller: Approx. 110 g, Mounting Bracket: 
Approx. 10 g
Degree of 
protection
E5CN Front panel: NEMA4X for indoor use (equivalent to 
IP66)
Rear case: IP20, Terminal section: IP00
E5CN-U Front panel: Equivalent to IP50, rear case: IP20, 
terminals: IP00
Memory protection Non-volatile memory (number of writes: 1,000,000 
operations)
EMC
Emission Enclosure: EN55011 Group1 ClassA
Emission AC Mains: EN55011 Group1 ClassA
Immunity ESD: EN61000-4-2 4 kV contact discharge 
(level 2)
8 kV air discharge (level 3)
Immunity RF-interference: 
EN61000-4-3 10 V/m 
(80-1000 MHz, 1.4-2.0 GHz 
amplitude modulated) (level 3)
10 V/m (900 MHz pulse modulated)
Immunity Conducted Disturbance: 
EN61000-4-6 3 V 
(0.15 to 80 MHz) (level 2)
Immunity Burst:
EN61000-4-4 2 kV Power-line (level 3)
1 kV I/O signal-line (level 3)
Immunity Surge:EN61000-4-5 1kV  line to line     
Power line, output line (relay output)
2 kV line to ground   Power line, 
output line (relay output)
1 kV line to ground   Input line 
(communication)
Immunity Voltage Dip/Interrupting: 
EN61000-4-11 0.5 cycle, 100% 
(rated voltage)
Approved standards UL 61010C-1
CSA C22.2 No.1010.1
Conformed standards EN61326, EN61010-1, IEC61010-1
VDE0106 Part 100 (Finger protection), when the 
terminal cover is mounted.
Applicable OS Windows 2000/XP
Applicable software Thermo Mini, CX-Thermo
Applicable models E5CN/E5CN-U Series
USB interface standard Conforms to USB Specification 1.1.
DTE speed 38400 bps
Connector specifications Computer: USB (type A plug)
Temperature Controller: Serial
Power supply Bus power (Supplied from USB host 
controller.)
Power supply voltage 5 VDC
Current consumption 70 mA
Ambient operating temperature 0 to 55°C (with no condensation or icing)
Ambient operating humidity 10% to 80%
Storage temperature
−20 to −60°C (with no condensation or 
icing)
Storage humidity 10% to 80%
Altitude 2,000 m max.
Weight Approx. 100 g
Transmission line 
connection method
RS-485 multipoint
Communications RS-485 (two-wire, half duplex)
Synchronization 
method
Start-stop synchronization
Baud rate 1200, 2400, 4800, 9600, 19200, or 38400 bps
Transmission code ASCII
Data bit length 7 or 8 bits
Stop bit length 1 or 2 bits
Error detection Vertical parity (none, even, odd)
Frame check sequence (FCS) with SYSWAY
Block check character (BCC) with CompoWay/F or 
CRC-16 Modbus
Flow control None
Interface RS-485
Retry function None
Communications 
buffer
40 bytes
Communications 
response wait time
0 to 99 ms
Default: 20 ms