Place of Origin: | England |
Brand Name: | MTL |
Model Number: | MTL5561 |
Minimum Order Quantity: | 1pc |
---|---|
Packaging Details: | carton |
Delivery Time: | in stock |
Payment Terms: | T/T payment |
Supply Ability: | 100pcs |
MTL5561 fire and smoke detector interface 2-channel
MTL5561 is a loop-powered 2–channel interface for use with conventional fire and smoke detectors located in hazardous areas. In operation, the triggering of a detector causes a corresponding change in the safe–area current. The unit features reverse input polarity protection, while ‘no-fail’ earth fault detection on either line can be provided by connecting an earth leakage detector to terminal 3 and/or 6.
MTL5561 SPECIFICATION
See also common specification
Number of channels
Two, fully floating, loop powered
Location of fire and smoke detectors
Zone 0, IIC, T4–6 hazardous area if suitably certified
Div. 1, Group A, hazardous area
Input voltage
6 to 30V dc
Current range
1 to 40mA, nominal
Quiescent safe–area current at 20°c
(Hazardous–area terminals open circuit)
< 400µA at VIN = 24V per channel
Integral input polarity protection
Input circuit protected against reverse polarity
‘no-fail’ earth fault protection
Enabled by connecting terminals 3 and/or 6 to an earth leakage
Detector (see notes below)
Fault on either line of each channel proclaimed: unit continues
working
Minimum output voltage Vout at 20°c
For Vin ≤ 25V: Vout = Vin – (0.38 x current in mA) – 2V
For Vin > 25V: Vout = 22.5V – (0.35 x current in mA)
Maximum output voltage
28V from 300Ω
Transfer accuracy at 20°c
Better than 400µA
Temperature drift
< 4µA/°C ( 0°C to 60°C)
< 15µA/°C (–20°C to 0°C)
response time to step input
Settles to within 5% of final value within 1.5ms
Power dissipation within unit
0.7W maximum at 24V with 40mA signal (each channel)
0.9W maximum at 30V with 40mA signal (each channel)
Notes:
1. To maintain isolation between the two channels, separate earth leakage
detectors are needed.
2. The earth leakage detectors introduce a 100µA, 1Hz ripple to the field circuit.
Contact Person: Ms. Steven
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