Datasheet

G2LM20
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Level monitoring of conductive liquids
Monitoring relays - GAMMA series
Multifunction
Secure isolation of the measuring circuit
2 change-over contacts
Width 22.5mm
Industrial design
Technical data
1. Functions
Level monitoring of conductive liquid, timing for tripping delay and turn-off
delay separately adjustable and the following functions (selectable by
means of rotary switch)
Pump up pump up or minimum monitoring
Pump down pump down or maximum monitoring
2. Time ranges
Adjustment range
Tripping delay (Delay ON): 0.5s 10s
Turn-off delay (Delay OFF): 0.5s 10s
3. Indicators
Green LED ON: indication of supply voltage
Yellow LED ON/OFF: indication of relay output
4. Mechanical design
Self-extinguishing plastic housing, IP rating IP40
Mounted on DIN-Rail TS 35 according to EN 60715
Mounting position: any
Shockproof terminal connection according to VBG 4 (PZ1 required),
IP rating IP20
Tightening torque: max. 1Nm
Terminal capacity:
1 x 0.5 to 2.5mm² with/without multicore cable end
1 x 4mm² without multicore cable end
2 x 0.5 to 1.5mm² with/without multicore cable end
2 x 2.5mm² flexible without multicore cable end
5. Input circuit
Supply voltage:
24V AC terminals A1-A2 (G2LM20 24VAC)
110V AC terminals A1-A2 (G2LM20 110VAC)
230V AC terminals A1-A2 (G2LM20 230VAC)
Tolerance:
24V AC -15% to +10% (G2LM20 24VAC)
110V AC -15% to +10% (G2LM20 110VAC)
230V AC -15% to +15% (G2LM20 230VAC)
Rated frequency: 48 to 63Hz
Rated consumption:
24V AC 2VA (1.5W) (G2LM20 24VAC)
110V AC 2VA (1.5W) (G2LM20 110VAC)
230V AC 2VA (1.5W) (G2LM20 230VAC)
Duration of operation: 100%
Reset time: 500ms
Residual ripple for DC: -
Drop-out voltage: >30% of the supply voltage
Overvoltage category: III (in accordance with IEC 60664-1)
Rated surge voltage: 4kV
6. Output circuit
2 potential free change-over contacts
Rated voltage: 250V AC
Switching capacity: 750VA (3A / 250V)
If the distance between the devices is less than 5mm!
Switching capacity: 1250VA (5A / 250V)
If the distance between the devices is greater than 5mm!
Fusing: 5A fast acting
Mechanical life: 20 x 10
6
Operations
Electrical life: 2 x 10
5
Operations at 1000VA resistive load
Switching frequency: max. 60/min at 100VA resistive load
max. 6/min at 1000VA resistive load
(in accordance with IEC 60947-5-1)
Overvoltage category: III (in accordance with IEC 60664-1)
Rated surge voltage: 4kV
7. Measuring circuit
Input: conductive probes (type SK1, SK2, SK3)
terminals E1-E2-E3
Sensitivity:    0.25to100kΩ(4mSto10µS)
Sensor voltage: 12V AC
Sensor current: max. 7mA
Wiring distance (capacity of cable 100nF/km):
max. 1000m (set value <50%)
max. 100m (set value 100%)
Overvoltage category: III (in accordance with IEC 60664-1)
Rated surge voltage: 6kV
8. Accuracy
Base accuracy: -
Adjustment accuracy: -
Repetition accuracy: -
Voltage influence: -
Temperature influence: -
9. Ambient conditions
Ambient temperature: -25 to +55°C (in accordance with IEC 60068-1)
-25 to +40°C (in accordance with UL 508)
Storage temperature: -25 to +70°C
Transport temperature: -25 to +70°C
Relative humidity: 15% to 85%
(in accordance with IEC 60721-3-3 class 3K3)
Pollution degree: 3 (in accordance with IEC 60664-1)
Vibration resistance: 10 to 55Hz 0.35mm
(in accordance with IEC 60068-2-6)
Shock resistance: 15g 11ms
(in accordance with IEC 60068-2-27)