Page 190 - EPR Catalog 2015

Liquid level monitors and controls
Technical data

Type CM-ENS CM ENS UP/DOWN

Supply circuit A1-A2 24 V AC 24 V AC
Rated control supply voltage US - A1-A2 110-130 V AC approx. 1.5 VA 110-130 V AC approx. 4 VA
power consumption A1-A2 220-240 V AC approx. 1.5 VA 220-240 V AC approx. 4 VA
A1-A2 380-415 V AC approx. 1.5 VA
2
Rated control supply voltage US tolerance -15...+10 %
Rated frequency
Duty time 50-60 Hz
100 %

Measuring circuit MAX-MIN-C

Monitoring function liquid level control
Response sensitivity 5-100 k:, adjustable
Maximum electrode voltage 30 V AC
Maximum electrode current 1 mA
Electrode supply line max. cable capacity 10 nF
max. cable length 100 m

Timing circuit -
Time delay approx. 250 ms
Tripping delay

Indication of operational states U: green LED R AL1: yellow LED
R MAX/MIN: yellow LED R AL2: yellow LED
Control supply voltage -
Output relay energized -
Alarm relay AL1
Alarm relay AL2

Output circuits 11-12/14, 21-22, 31-32

Kind of output 1 c/o contact, 1 n/o + 1 n/c contact 2)

Operational principle 1) open-circuit principle open- and closed-circuit principle

Contact material AgCdo

Rated operational voltage Ue (IEC/EN 60947-1) 250 V

Minimum switching voltage / minimum switching current -/-

Maximum switching voltage 250 V

Rated operational current Ie (IEC/EN 60947-5-1) AC-12 (resistive) 230 V 4 A
AC-15 (inductive) 230 V 3 A

DC-12 (resistive) 24 V 4 A

DC-13 (inductive) 24 V 2 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) 0.3 x 106 switching cycles

Max. fuse rating to achieve short-circuit protection n/c / n/o contact 10 A fast-acting / 10 A fast-acting

General data 22.5 x 70 x 100 mm (0.89 x 3.07 x 3.94 in)
Dimensions (W x H x D) any
Mounting position enclosure / terminals IP50 / IP20
Degree of protection operation / storage -20...+60 °C / -40...+85 °C
Ambient temperature range DIN rail (IEC/EN 60715)
Mounting
fine-strand with wire end ferrule 2 x 2.5 mm2 (2 x 14 AWG)
Electrical connection
Wire size

Standards IEC 255-6, EN 60255-6
2006/95/EC
Product standard 2004/108/EC
Low Voltage Directive
EMC Directive

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) 4g

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

Isolation data

Rated insulation voltage between supply, measuring and output circuit 250 V

(VDE 0110, IEC 60947)

Rated impulse withstand voltage between all isolated circuits 4 kV / 1.2 - 50 μs

(VDE0 110, IEC 664)

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.
2) 1SVR 430 851 R1300 (version with safe isolation)

2/123 ABB | Catalog Electronic Products and Relays 2015 | 2CDC 110 004 C0210