MTL MTL-5018
Datasheet
MTL-5018_d-714382005s.pdf
49 KiB
Extracted Text
Hazardous area Safe area MTL5018 SWITCH/ PROXIMITY DETECTOR ���������������� �������� INTERFACE ���� two-channel, with line fault detection ���� � � � � � $��� and phase reversal � � � ���� �� � � �� � $��� � ���� �� The MTL5018 enables two safe-area loads to be controlled by two � switches or proximity detectors located in a hazardous area. Two �� ��� relay outputs are provided. Independent phase reversal control allows �� ��� ������������� ������!�" an alarm condition to be signalled for either state of the sensor. A #�����!��#� �����������! ������������ selectable line fault detect (LFD) facility detects an open or short circuit in either field circuit. SPECIFICATION See also common specification Terminal Function 1 Input –ve (Ch 1) Number of channels 2 Input +ve (Ch 1) Two 3 Earth leakage detection Location of switches 4 Input –ve (Ch 2) Zone 0, IIC, T6 hazardous area 5 Input +ve (Ch 2) Div. 1, Group A hazardous location 6 Earth leakage detection Location of proximity detector 7 Normally-closed contact (Ch 2) Zone 0, IIC, T4–6 hazardous area if suitably certified 8 Common (Ch 2) Div. 1, Group A hazardous location 9 Normally-open contact (Ch 2) Safe-area output 10 Normally-closed contact (Ch 1) Two relays with changeover contacts 11 Common (Ch 1) Hazardous-area inputs 12 Normally-open contact (Ch 1) Inputs conforming to NAMUR/DIN 19234 standards for proximity 13 Supply –ve detectors 14 Supply +ve Voltage applied to sensor 7 to 9V from 1kΩ ±10% Input/output characteristics LED indicators Normal (reverse) phase: Green: power indication output energised (de-energised) if I >2.1mA or R <2kΩ in in Yellow: two: status of each channel (on when outputs are energised) output de-energised (energised) if I <1.2mA or R >10kΩ in in Red: two: LFD indication for each channel (on when line fault Hysteresis: 200µA, typical detected) Line fault detection (LFD) Maximum current consumption User-selectable via switches on the top of the unit. Line faults 60mA at 20V are indicated by an LED for each channel. A detected line fault 60mA at 24V de-energises the relay. 40mA at 35V Open-circuit alarm on if I <100µA in Maximum power dissipation Open-circuit alarm off if I >250µA in 1.4W at 24V Short-circuit alarm on if R <100Ω in 1.5W at 35V Short-circuit alarm off if R >360Ω in Isolation Note: Resistors must be fitted when using the LFD facility with a contact input 250V ac or dc between power supply, hazardous-area circuits 500Ω to 1kΩ in series with switch and relay outputs 20kΩ to 25kΩ in parallel with switch Safety description (each channel) Phase reversal 10.5V, 800Ω, 14mA, U = 250V rms or dc m Independent for each channel, user-selectable Relay type Single pole, changeover contacts Note: reactive loads must be adequately suppressed Relay characteristics Response time: 10ms maximum Contact rating: 250V ac, 2A, cosø >0.7 40V dc, 2A, resistive load EUROPE (EMEA) Tel: +44 (0)1582 723633 Fax: +44 (0)1582 422283 AMERICAS Tel: +1 281 571 8065 Fax: +1 281 571 8069 Aug 2008 ASIA PACIFIC Tel: +65 6 487 7887 Fax: +65 6 487 7997 E-mail: enquiry@mtl-inst.com Web site: www.mtl-inst.com
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