Features
- Interfaces with PTC sensor as DIN 44081
- The SC511 has a fault latching feature, can be reset via external opening contact or via the reset button on the unit.
- Test button to simulate fault condition on SC511.
- Sensor or cable fault detection and indication with an automatic relay de-energisation for failsafe operation.
- 10A SPDT relay output.
Specifications
Power Supply
AC: Supply Voltage: 12, 24, 115, 230, 400, 415, 525V ±15%
Power Consumption: 3VA, 6VA for 415, 525V (approx)
DC: Supply Voltage: 10-30V, 48, 60, 110V ±15%
Isolation: No galvanic isolation
Power Consumption: 100mA for 10-30V, 30mA for 48V and higher
Sensor Input
Type: PTC sensor as per DIN 44081
Input Impedance: 2200 Ohms
Open-Circuit voltage: <=2.5V
Short Circuit current: 1mA (max)
Measuring Characteristics of the Sensor
Maximum cold resistance of PTC sensor: 1500ohm (i.e 1 to 6 sensors can be connected)
Triggering threshold: 3100 Ohms ±10%
Recovery threshold: 1650 Ohms ±10%
Short-circuit detection: <20ohms
Open-circuit detection: 10k ±10%
Repetitive accuracy: 0,5%
Response Time: 50 milliseconds
