Page 191 - EPR Catalog 2015

Liquid level monitors and controls
Technical data

Type CM-ENN

Supply circuit A1-A2 24 V AC 2
Rated control supply voltage US - power A1-A2 110-130 V AC approx. 2.5 VA
consumption A1-A2 220-240 V AC approx. 3 VA
A1-A2 24-240 V AC/DC approx. 2 VA/W
Rated control supply voltage US tolerance
-15...+10 %

Rated frequency 50-60 Hz oder DC
Duty time 100 %
Measuring circuit
Monitoring function liquid level control MAX-MIN-C
Response sensitivity
adjustable 25-500 k⏲
Maximum electrode voltage
Maximum electrode current 250 ⏲ - 5 k⏲ 2.5-50 k⏲ 0.5 mA
Electrode supply line 4 nF
20 V AC 20 m
Timing circuit
Time delay 8 mA 2 mA
Indication of operational states
Control supply voltage max. cable capacity 200 nF 20 nF
Output relay energized
Output circuits max. cable length 1000 m 100 m
Kind of output
Operational principle 1) 0.1-10 s, adjustable, ON- or OFF-delay
Contact material
Rated operational voltage Ue U: green LED 15-16/18, 25-26/28
R: yellow LED

2 c/o contacts
closed-circuit principle
AgCdO
IEC/EN 60947-1 400 V

Minimum switching voltage / minimum switching current -/-

Maximum switching voltage 400 V

Rated operational current Ie (IEC/EN 60947- AC-12 (resistive) 230 V 5 A
5-1) AC-15 (inductive) 230 V 3 A

DC-12 (resistive) 24 V 5 A

DC-13 (inductive) 24 V 2.5 A

AC rating (UL 508) Utilization category (Control Circuit Rating Code) B 300

max. rated operational voltage 300 V AC

max. continuous thermal current at B 300 5 A

max. making/breaking apparent power at B 300 3600/360 VA

Mechanical lifetime 30 x 106 switching cycles

Electrical lifetime (AC-12, 230 V, 4 A) 0.1 x 106 switching cycles

Max. fuse rating to achieve short-circuit n/c / n/o contact 4 A fast-acting / 6 A fast-acting

protection

General data

Diemensions (W X H X D) 45 x 78 x 100 mm (1.77 x 3.07 x 3.94 in)

Mounting position any

Degree of protection enclosure / terminals IP50 / IP20

Ambient temperature range operation / storage -25...+65 °C / -40...+85 °C

Mounting DIN rail (IEC/EN 60715)

Electrical connection

Wire size fine-strand with wire end ferrule 2 x 2.5 mm2 (2 x 14 AWG)

Standards

Product standard IEC 255-6, EN 60255-6

Low Voltage Directive 2006/95/EC

EMC Directive 2004/108/EC

Electromagnetic compatibility -

electrostatic discharge IEC/EN 61000-4-2 Level 3 (6 kV / 8kV)

radiated, radio-frequency, electromagnetic field IEC/EN 61000-4-3 Level 3 (10 V/m)

electrical fast transient / burst IEC/EN 61000-4-4 Level 3 (2 kV / 5 kHz)

surge IEC/EN 61000-4-5 Level 4 (2 kV L-L)

conducted disturbances, induced by radio- IEC/EN 61000-4-6 Level 3 (10 V)

frequency fields

Resistance to vibration (IEC 68-2-6) 5g

Mechanical resistance (IEC 68-2-6) 10 g

Isolation data

Rated insulation voltage between supply, measuring and output circuit 500 V

(VDE 0110, IEC 60947)

Rated impulse withstand voltage between all isolated circuits (VDE 0110, IEC 664) 4 kV / 1.2 - 50 μs

Test voltage between all isolated circuits 2,5 kV, 50 Hz, 1 min.

Pollution category (VDE 0110, IEC 664, IEC 255-5) 3/C

Overvoltage category (VDE 0110, IEC 664, IEC 255-5) III / C

Environmental testing (IEC 68-2-30) 24 h cycle time, 55 °C, 93 % rel., 96 h

1) Open-circuit principle: Output relay energizes if the measured value exceeds/drops below the adjusted threshold.
Closed-circuit principle: Output relay de-energizes if the measured value exceeds/drops below the adjusted threshold.

2CDC 110 004 C0210 | Catalog Electronic Products and Relays 2015 | ABB 2/124