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7 Specifications
7.1 Mains Supply
Rated supply voltage U
s
24 V DC
Tolerance voltage U
s
21–28 V DC
Power consumption
<1 W
7.2 Control Inputs and Outputs
7.2.1 PTC Thermistor Connection X44/1+X44/2
Standard
DIN VDE V0898-1-401
Numbers
Set with 3 or 6 PTCs in series
Cutout point
3.3 kΩ...3.65 kΩ...3.85 kΩ
Reclosing point
1.7 kΩ...1.8 kΩ...1.95 kΩ
Collective resistance cold sensors
≤1.65 kΩ
Terminal voltage (sensors)
≤2.5 V at R ≤3.65 kΩ, ≤9 V at R=∞
Terminal current (sensors)
≤1 mA
Short circuit
20 Ω ≤40 Ω
Power consumption
≤2 mW
7.2.2 Safe Stop Terminal 37, X44/12
Output
PNP transistor
Logical voltage level
0–24 V DC
Voltage, Low=0
PNP <4 V DC
Voltage, High=1
PNP >20 V DC
Current
60 mA
7.2.3 Logic out, X44/10
Output
PNP transistor
Logical voltage level
0–24 V DC
Voltage, Low=0
PNP <5 V DC
Voltage, High=1
PNP >10 V DC
Current
10 mA
7.3 Ambient Conditions
7.3.1 Environment
Rated ambient temperature range, T
a
-20 °C (-4 °F) to +55 °C (131 °F)
Relative humidity
5–95%, without condensation
EMC - Immunity Industry Standard
EN 61000-6-2
EMC - Emission Industry Standard
EN 61000-6-4
Vibration resistance
10–1000 Hz 1.1.4 g
Shock resistance
50 g
7.3.2 Testing Conditions
Standards
EN 60947-8, EN 50178
Rated impulse voltage
6000 V
AQ267038105120en-000101 / 130R0104 | 29
Danfoss A/S © 2022.08
Specifications
VLT® PTC Thermistor Card MCB 112
Operating Guide