Electronic counters without preselection
➜ Totalizers without preselection - LCD 24 x 48 - CTR24
■ Display: 8-digit LCD, height 8 mm
■ Powered by a lithium battery
■ Counter inputs: solid state (4-30 V
(10
➞ 260 V
)
a
■ Reset on panel or external with inhibition option
■ Backlit model (2341-2351-2342)
■ Counting directions can be selected with input (2241-
2341/2251-2351)
■ Accessories for 50 x 25 mm cut-out
Part numbers
Type Type Functions Code
CTR24 non-backlit model 2241 Solid state input, lithium battery PNP/NPN
CTR24 model with orange
backlighting
2251 Solid state input, lithium battery NPN/NPN
2242 Voltage input, lithium battery
2341 Solid state input, lithium battery PNP/NPN
2351 Solid state input, lithium battery NPN/NPN
2342 Voltage input, lithium battery
c
) or voltage
87622061
87622062
87622070
87622081
87622082
87622090
Accessories
Description Code
Adaptor for 50 x 25 mm cut-out - Fixed with screws
Adaptor for 50 x 25 mm cut-out - Fixed with clips
DIN rail adaptor
Clip-fixing kit (supplied with the product)
26546843
26546844
26546840
26546848
General characteristics
Environmental characteristics
Consumption
Connection by 8 screw terminals at rear of casing
Connection capacity
Fixed using bracket
Degree of protection front face IP 65
Temperature limits use (°C) -10
Temperature limits stored (°C) -20
Breakdown voltage According to EN 61010-1: 2000 V / 50 Hz / 1 min
Conformity to standards EN 61000-6-2 - EN 55011 class B
Altitude 2000 m
Certifications UL - cULus (pending) - CE
Weight (g) 50
Operating characteristics
Function Impulse counter
Display 8-digit LCD
Height digits (mm) 8
Counting capacity -9.999.999
Inputs 2241-2341
1 slow counting input for contact closure on NPN open-collector transistor
input (terminals 2-6)
1 input for high speed counting signal from voltage level (terminals 1-6)
Low level
High level
High-speed counting 12 KHz max.
Input impedance 100 KΩ PNP
Inputs 2251-2351
1 slow counting input for contact closure on NPN open-collector transistor
input (terminals 2-6)
1 input for high speed counting signal from voltage level (terminals 1-6)
Low level
High level
High-speed counting 7 KHz max.
Input impedance 1 MΩ
Backlighting: 24 Vc ± 20% 50 mA
✓
2
1.5 mm
✓
➞ +60
➞ +70
➞ 99.999.999 with elimination of zeros
✓
c
4
➞ 30 V
c
➞ 0.7 V
0
c
➞ 30 V
4
42 µs PNP
✓
3
➞ 30 V
➞ 0.7 V
0
➞ 30 V
3
70 µs NPN
PNP
c
c
c
56
www.crouzet-control.com
Reset - External 2241-2341 & 2251-2351
Volt-free contact or open collector (terminals 3-6)
✓
Inputs 2242-2342
1 input for slow counting 2 voltage levels
Voltage - Terminals 1-2
✓
10
➞ 260 V
z
Input impedance (kΩ) 160
Slow counting 30 Hz
Minimum pulse time 16 ms
Low level
High level
0
10
➞ 2 V
z
➞ 260 V
z
Reset - External 2242-2342
Voltage - Terminals 2-3
✓
Minimum pulse time 16 ms
Low level
High level
0
10
➞ 2 V
z
➞ 260 V
z
Reset to zero - Panel
Reset via Inhibited: Terminals 4-6 not connected
Active: Terminals 4-6 connected
Supply
1 lithium battery - Life (years) 8
Dimensions (mm)
CTR24 Fixing strip with clip-on yoke Panel cut-out
48
24
CTR24
19,3
22x45
1
2
+0,3
- 0
22,2
+0,6
45
2,8
47,7 3
Seal
1
Fixing yoke
2
4 appliances 26546843 - Adaptor for 50 x 25 mm cut-out -
+ 0,6
3045
+ 0,3
20 22,2
Fixed with screws
40
32
56
25X50
1
26546840 - DIN rail adaptor
101
45
50,4 x 25,4
26546844 - Adaptor for 50 x 25 mm cut-out Fixed with clips
53
28
4
25X50
Accessory supplied with the counter
1
4
45
www.crouzet-control.com
75
83
70
57
Connections
768
30 V d c - 12 KH z
12345
+
3
5
4-30V
1
6
1
6
PNP
+
OV
4-30V
1
2
3
4
5
6
7
8
1
6
OV
4-30V
OV
1
6
4-30V
2 - 3
6
3 - 2
6
3 - 2
6
821 3 4 5 6 7
123 45 678
7KHz
30Hz
1
2
3
4
5
6
7
8
2241-2341 2241-2341 2241-2341
821 3 4 5 6 7
Fast count
PNP fast count input - Voltage PNP fast count input Transistor or 3-wire
Slow count
Reset input 12 ms
Enable panel reset
Mode count direction
0 V common/ (BL- only 23xx)
Backlighting option (only 2341)
Backlighting option + 24 Vc (only 2341)
2241-2341 2241-2341 2241-2341
2-wire proximity sensor fast count input 2-wire proximity sensor fast count input Slow count input (2) or reset input (3)
2241-2341 2241-2341 2251-2351
PNP proximity sensor (for leakage
current detector
≤ 1 mA)
58
Slow count input (2) or reset input (3) Slow count input (2) or reset input (3) -
Contact not supplied with power
Fast count
Slow count
Reset input 12 ms
Enable panel reset
Mode count direction
0 V common/ (BL- only 23xx)
Backlighting option + (only 2351)
Backlighting option + 24 Vc (only 2351)
www.crouzet-control.com
2251-2351 2251-2351 2251-2351
OV
4-30V
OV
1 - 3
2
2 - 3
6
3 - 2
6
3 - 2
6
821 3 4 5 6 7
8
10260
30Hz
10260
2
Vac/dc
Vac/dc
1 34 657
10-240V~/
2
1 - 3
2
1 - 3
10-240V~/
1
2
3
4
5
6
7
8
1 - 3
2
PNP
+
OV
10-260V
1 - 3
2
NPN
+
OV
10-260V
1 - 3
2
OV
30 V max
1
6
Fast count input NPN - Voltage
2251-2351 2251-2351 2251-2351
Slow count input (2) or reset input (3) Slow count input (2) or reset input (3) Slow count input (2) or reset input (3)
+
NPN
1
6
Fast count input NPN Transistor or 3-wire
PNP proximity sensor (for leakage current
detector
≤ 1 mA)
2-wire proximity sensor fast count input
Contact not supplied with power
2242-2342 2242-2342 2242-2342
Fast count
AC/DC common
Reset input 12 ms
Counter or reset input - Voltage Counter or reset input -
Enable panel reset
count direction
0 V common/ (BL- only 23xx)
Backlighting option - (only 2342)
Backlighting option + 24 Vc (only 2342)
2242-2342 2242-2342 2242-2342
Counter or reset input PNP Transistor or
3-wire PNP proximity sensor (for leakage
current detector < 1 mA)
Counter or reset input NPN Transistor or
3-wire PNP proximity sensor (for leakage
current detector < 1 mA)
Contact supplied with power
Start/Stop or reset input: 2-wire proximity
sensor R=470
current detector ≤ 1 mA
Ω/2 W for 2-wire leakage
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59
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