PollutionDegree: 2 in accordance with IEC/EN 61131-2
Maximum utilization altitudeOperation: 2000 m
Mechanical resistanceImmunity to vibrations IEC/EN 60068-2-6, Fc test
Resistance to electrostatic dischargeImmunity to ESD IEC/EN 61000-4-2, level 3
Resistance to HF interference
(Immunity)
Conducted and radiated emissions
(in accordance with EN 55022/11 group 1)
Operation temperature
Storage temperature
Relative humidity95% max. (no condensation or dripping water)
Screw terminals connection capacityFlexible wire with ferrule: 1 conductor: 0.2 to 2.5 mm² (AWG 24-14)
Processing characteristics
LCD displayDisplay with 4 lines of 18 characters
Programming methodFBD (Function Block Diagram), including SFC (Sequential Function Chart, Grafcet)
Program sizeFunction blocks: typically 1000 blocks
Program memoryFlash
Removable memoryN.A
Data memory2 k octets
Backup time
(in the event of power failure)
Data backupData backup in the ash memory is guaranteed if the product is powered on more
Cycle timeFrom 2 ms to 90 ms, default value: 10 ms
Clock data retention10 years (lithium battery) at 25°C (77°F)
Clock driftDrift < 12 min/year (at 25°C (77°F))
Timer block accuracy0.5 % +/- 2 cycle time
Start up time on power up< 7 s base alone, < 5 s base + 2 expansions + 1 accessory (RS485)
Self testTest rmware integrity (checksum memory)
Supply
Nominal voltage24 VDC (-15% / +20%)
Operating limits20.4 - 28.8 VDC
Immunity from micro power cutsy 1 ms (repetition 20 times)
Max. absorbed power5 W @ 24 VDC, 6.5 W @ 28.8 V, - 0.3 W backlight OFF
Protection against polarity inversionsYes
Inputs
Digital and high speed digital inputs 24 VDC - 4 inputs from I1 to I4
Input used as digital input
Input voltage24 VDC (-15% / +20%)
Input current1.8 mA @ 20.4 V
Transport: 3000 m
Immunity to shock IEC/EN 60068-2-27, Ea test
Immunity to radiated electrostatic elds IEC/EN 61000-4-3, level 3
Immunity to fast transients (burst immunity) IEC/EN 61000-4-4, level 3
Immunity to shock waves IEC/EN 61000-4-5
Radio frequency in common mode IEC/EN 61000-4-6, level 3
Class B
-20°C (-4°F) +60°C (140°F) (+40°C (104°F) in a non-ventilated enclosure)
-40°C (-40°F) +80°C (176°F)
Flexible wire with ferrule: 2 conductors: 0.2 to 0.75 mm² (AWG 24-18)
Rigid wire: 1 conductor: 0.2 to 2.5 mm² (AWG 24-14)
Rigid wire: 2 conductors: 0.2 to 0.75 mm² (AWG 24-18)
Tightening torque: 0.5 N.m (4.5 lb-in) (tighten using screwdriver diam. 3.5 mm)
Stripping length: 6 mm
Macro blocks: 64 max. (256 blocks per macro)
Program and settings in the controller: 10 years
Data memory: 10 years
than 10 seconds
6 s / month (at 25°C (77°F) with user-denable correction of drift).
Synchronizable by network
Stability of the internal power supply
Check the conformity of the em4 device conguration with the conguration in the
application program
2.1 mA @ 24 V
2.5 mA @ 28.8 V
Input impedance11.6 kΩ
Logic 1 voltage thresholdu 15 VDC
Making current at logic state 1u 1.3 mA
Logic 0 voltage thresholdy 10 VDC
Release current at logic state 1y 0.8 mA
Response time1 to 2 cycle times
Sensor typeContact or 3-wire PNP
Conforming to IEC/EN 61131-2Type 1
Input typeResistive
Isolation between power supply and inputsNone
Isolation between inputsNone
Protection against polarity inversionsYes
Status indicatorOn LCD screen
Cable lengthy 100 m
Input used as high speed digital input
Maximum counting frequency3 channels encoder (I1, I2, I3): 20 kHz*
Other functions4 chronometers (I1, I2, I3, I4 )
Cable lengthy 3 m with shielded twisted cable
Digital 24 VDC and analog inputs 12 bits / 28.8 V - potentiometer - 8 inputs from I5 to IC
Input used as digital input
Input voltage24 VDC (-15% / +20%)
Input current1.8 mA @ 20.4 V
Input impedance11.6 kΩ
Logic 1 voltage thresholdu 11 VDC
Making current at logic state 1u 1 mA
Logic 0 voltage thresholdy 9 VDC
Release current at logic state 1y 0.7 mA
Response time1 to 2 cycle times
Sensor typeContact or 3-wire PNP
Conforming to IEC/EN 61131-2Type 1
Input typeResistive
Isolation between power supply and inputsNone
Isolation between inputsNone
Protection against polarity inversionsYes
Status indicatorOn LCD screen
Cable lengthy 100 m
Input used as analog input
Measuring range
Input impedance11.6 kΩ
Maximum value without destruction28.8 VDC max
Input typeCommon mode
Resolution12 bit at maximum input voltage (10 bit at 10V)
Value of LSB7.03 mV
Conversion timeController cycle time
Maximum error in 0-10V mode+/- 1.1 % of full scale at 25°C (77°F)
Maximum error in 0-V power supply mode+/- 2 % of full scale at 25°C (77°F)
Repeat accuracy at 55°C (131°F)+/- 0.5 %
2 independent counters (I1, I2) (I3, I4) (Cumul, IND, DIR): 2 channels: 40 kHz*,
4 channels: 20 kHz*,
2 independent counters (I1, I2) (I3, I4) (PH, PH2): 2/4 channels: 20 kHz*
4 independent counters (I1, I2, I3, I4) (Up/Down): 1 channel: 60 kHz*, 2 channels:
40 kHz*, > 2 channels: 20 kHz*
* with a time cycle <= 10 ms and a ton / toff = 50% +/- 5%, level 0 < 2V and level 1 >
20,4V
Isolation between analog channel and power supplyNone
Protection against polarity inversionsYes
Potentiometer control2.2 kΩ / 0.5 W (recommended), 10 KΩ max.
Cable lengthy 10 m with shielded twisted cable (sensor not isolated)
Digital 24 VDC and analog inputs 12 bits / 10 V & 11 bits / 0-20 mA- potentiometer - 4 inputs from ID to IG
Input used as digital input (power off state)
Input voltage24 VDC (-15% / +20%)
Input current1.5 mA @ 20.4 V
Input impedance13.9 kΩ
Logic 1 voltage thresholdu 11 VDC
Making current at logic state 1u 0.8 mA
Logic 0 voltage thresholdy 8 VDC
Release current at logic state 1y 0.5 mA
Response time1 to 2 cycle times
Sensor typeContact or 3-wire PNP
Conforming to IEC/EN 61131-2Type 1
Input typeResistive
Isolation between power supply and inputsNone
Isolation between inputsNone
Protection against polarity inversionsNo
Status indicatorOn LCD screen
Cable lengthy 100 m
Input used as 0-10 V analog input
Measuring range
Input impedance13.9 kΩ
Maximum value without destruction28.8 VDC max
Input typeCommon mode
Resolution12 bit / 10V
Value of LSB2.45 mV
Conversion timeController cycle time
Maximum error at 25°C (77°F)+/- 0.8 % of full scale
Maximum error at 55°C (131°F)+/- 1.2 % of full scale
Repeat accuracy at 55°C (131°F)+/- 0.5 %
Isolation between analog channel and power supplyNone
Protection against polarity inversionsYes for voltage y 10 V
Potentiometer control2.2 kΩ / 0.5 W (recommended), 10 KΩ max.
Cable lengthy 10 m with shielded twisted cable (sensor not isolated)
Input used as 0-20 mA analog input
Measuring range
Input impedance245 Ω
Maximum value without destruction30 mA max
Input typeCommon mode
Resolution11 bit (normalized at 0 - 2000) / 20 mA
Value of LSB10 µA
Conversion timeController cycle time
Maximum error at 25°C (77°F)+/- 1.2 % of full scale
Maximum error at 55°C (131°F)+/- 1.7 % of full scale
Repeat accuracy at 55°C (131°F)+/- 0.5 %
Isolation between analog channel and power supplyNone
Protection against polarity inversionsYes
Overvoltage protection
Cable lengthy 30 m with shielded twisted cable (sensor not isolated)
1.7 mA @ 24 V
2.1 mA @ 28.8 V
0 10 V
0 20 mA (4 20 mA by the application)
Yes If the input voltage is > 7 V, this one is automatically switched on 0-10V conguration.
Outputs
Digital / PWM solid state output - 2 solid state outputs from O1 to O2
Output used as digital output
Breaking voltage
Nominal voltage12 / 24 VDC
Nominal current0.5 A on resistive load @ 25°C (77°F)
Max. breaking current0.625 A
Non repetitive overload current1 A
Maximum breaking current in the common 1 A
Voltage drop< 1 V for I = 0.5 A
Response timeMake = 1 cycle time + 30 µs typical
Built-in protectionsAgainst overloads and short-circuits: Yes
Status indicatorOn LCD screen
Cable lengthy 10 m with shielded twisted cable
Distance between the power source and the static outputsy 30 m
6 A relay output - 2 outputs from O3 to O4
Breaking voltage250 VAC max
Breaking current6 A, Derating: UL: u 45°C (113°F): 4 A max
Maximum breaking current in the common IEC @ 25°C (77°F): 12 A
Mechanical life5 000 000 operations (cycles)
Electrical durability for 50 000 operating cycles24 VDC tau = 0 ms: 6 A, tau = 7 ms: 3 A, tau = 15 ms: 1.8 A
Minimum switching capacity100 mA (at minimum voltage of 12V)
Maximum operating rateOff load: 10 Hz
Voltage for withstanding shocksIn accordance with IEC/EN 60947-1 and IEC/EN 60664-1: 4 kV
Response timeMake = 1 cycle time + 8 ms typical
Built-in protectionsAgainst short-circuits: None
Status indicatorOn LCD screen
Cable lengthy 30 m
10 28.8 VDC
Release = 1 cycle time + 40 µs typical
Against over voltages (*): Yes
Against inversions of power supply: Yes
(*) In the absence of a potential free contact between the output of the programmable
logic controller and the load
Command Output Fault
Normal condition 0 0 No
1 1 No
Overheating 0 0 No
1 0 Yes
Underpowered 0 0 X
1 0 X
Short circuit (current limit) 0 0 No
1 0 Yes
0 100 % 100 steps
y 2 % (from 10 % 90 %)
IEC @ 60°C (140°F) or UL: 10 A
Usage category DC-12: 24 V, 6 A
Usage category DC-14: 24 V, 1.8 A
250 VAC cos phi = 1: 6 A, cos phi = 0.7: 5 A, cos phi = 0.4: 2.5 A
Usage category AC-12: 250 V, 6 A
Usage category AC-13: 250 V, 5 A
Usage category AC-15: 250 V, 2 A
At operating current: 0.1 Hz
Release = 1 cycle time + 4 ms typical
Against over voltages and overload: None
4,99
124,6 / 4.90
mm
I1 ... IG 0/1
+ 24 VD
–
I5 ... IC U
–
30 V, NTC, LDR, R
ID ... IG U / I
+ 24 VDC
x
–
x
–
Hz
x
–
I
WWW.CROUZET-AUTOMATION.COM I 06 I em4I WWW.CROUZET-AUTOMATION.COM I 07 I em4
8 A relay output - 6 outputs from O5 to OA
Breaking voltage250 VAC max
Breaking current8 A, Derating: CEI : u 55°C (131°F) or UL: u 45°C (113°F): 6 A max
Maximum breaking current in the common IEC @ 25°C (77°F): C3, C6: 8 A ; C4, C5: 16 A
IEC @ 60°C (140°F) or UL: C3, C6: 8 A ; C4, C5: 10 A
Mechanical life20 000 000 operations (cycles)
Electrical durability for 50 000 operating cycles24 VDC tau = 0 ms: 8 A, tau = 7 ms: 3 A, tau = 15 ms: 1.5 A
Usage category DC-12: 24 V, 8 A
+ 24 VDC
LDR
0 - 28,8V
0 - 10V
NTC
2K2
0.5 W
10k max
+
I5 ... IC
12 bits / 28,8V
-
B26
Usage category DC-14: 24 V, 1.5 A
250 VAC cos phi = 1: 8 A, cos phi = 0.7: 4.75 A, cos phi = 0.4: 3 A
Usage category AC-12: 250 V, 8 A
Usage category AC-13: 250 V, 4.3 A
Usage category AC-15: 250 V, 1.5 A
Minimum switching capacity100 mA (at minimum voltage of 12V)
Maximum operating rateOff load: 10 Hz
At operating current: 0.1 Hz
Voltage for withstanding shocksIn accordance with IEC/EN 60947-1 and IEC/EN 60664-1: 4 kV
Response timeMake = 1 cycle time + 10 ms typical
Release = 1 cycle time + 5 ms typical
11 bits
0 - 20 mA
0 - 10V
3K3
2K2
0.5 W
10k max
+
ID ... IG
12 bits / 10V
-
B26
Built-in protectionsAgainst short-circuits: None
Against over voltages and overload: None
Status indicatorOn LCD screen
Cable lengthy 30 m
Schemes
Dimensions
B26-ET Glossy
16,6
0.65
87,6 / 3.45
43,2 / 1.70
60,6 / 2.38
48,7 / 1.91
inch
I1 ... I4 2604
+ 24 VDC
+
A
A
B
Z
B
Z
90°
-
PNP
+
I1
I2
I3
I4
-
CNT 1
B26
I1 ... I4 2604
+ 24 VDC
+
19.3
/1,80152.4
/5477.1
/0945.3
A
B
-
+
A
B
-
+
I1
I2
I3
I4
-
CNT 1
CNT 2
B26
+
(2)
–
24V
20 mA, 10 V, R
(2)
+
24V
–
Hz
+
(2)
24V
–
+
(2)
24V
–
(1)
(1)
(1)
(1)
–
I1
I2 I3 I4 I5 I6 I7 I8I9 IA IB IC ID IE IF IG
+
+–
I1
I2 I3 I4 I5 I6 I7 I8I9 IA IB IC ID IE IF IG
+–
I1
I2 I3 I4 I5 I6 I7 I8I9 IA IB IC ID IE IF IG
+–
I1
I2 I3 I4 I5 I6 I7 I8I9 IA IB IC ID IE IF IG
10 m Max
393.7 inches Max
30 m Max
1181 inches Max
10 V, R
10 m Max
393.7 inches Ma
3 m Max
118.1 inches Ma
3 m Max
118.1 inches Ma
20 mA
Connections
Inputs
C
PNP
+
-
I1 ... IG
B26
24V
(2)
PNP
+
–
I1 ... I4 2604
+ 24 VDC
+
I1 ... I4
BN
BL
(1)
+–
I1
I2 I3 I4 I5 I6 I7 I8I9 IA IB IC ID IE IF IG
BK
100 m Max
3937 inches Max
PNP
-
B26
(2)
24V
Hz, s, Rpm
(1)
+
–
+–
BN
BL
BK
I1
I2 I3 I4 I5 I6 I7 I8I9 IA IB IC ID IE IF IG
3 m Max
118.1 inches Max
(1) 1 A (UL248) quick-blowing fuse, circuit-breaker or circuit protector (US)