03590730
JUMO 00548736 Sicherheitstemperaturbegrenzer

The configurable safety temperature limiter/ monitor according to DIN EN 14597 with 1oo2D architecture is equipped with two universal analog inputs, two relay outputs (pre- and limit value alarm) and a universal analog output. The switching capacity of the relay contacts is AC 250 V, 3 A, 50 Hz (resistive load). The pre-alarm is adjustable as absolute or as distance from the limit value. The front side impresses by the brilliant LC display with background lighting and plain text display. With the use of the safety temperature limiter (STB) and safety temperature monitor (STW), hazards that could lead to injury to people, damage to the environment or destruction of production facilities and production goods can be detected and averted early and safely. Their primary task is to reliably monitor thermotechnical processes and, in the event of a fault, to restore the plants to a safe operating condition. The measured value at the analog input can be acquired via various sensors or standard signals. An exceeding of the limit value is signalled by the built-in LEDs for each channel and the relay output Alarm switches the system into an operationally safe state (alarm range). The high requirements of DIN EN 61508 and DIN EN 13849 are fulfilled by a device concept whose 1oo2D structure guarantees the reliable detection of errors and can therefore also be used in applications that are subject to the new Machinery Directive 2006/ 42/EC. When used as a safety temperature monitor STW (Schutz-Temperatur-Wächter), the device operates with automatic reset (e.g. for heat generating systems). This occurs after the sensor temperature has fallen below the set limit value by the amount of the switching difference (setting: max-alarm). The automatic resetting is carried out with setting Min-Alarm after the sensor temperature has risen above the set limit value by the amount of the switching difference. When used as a safety temperature limiter STB (protection temperature limiter for heat generating plants), the reset is performed manually or with a tool. The power supply range is from AC 110 to 240 V +10 % /-15 %, 48 to 63 Hz.