Power Supply; Electrical Connections - DIEL MT 300 Manuel D'instructions

Place the thermocontroller on ther DIN rail.
The device can be supplied with (220÷240) Volt AC ± 10% 50/60 Hz.
The power supply terminals are indicated with the abbreviation 8-9 and are also
shown in table TAB 1 at the end of the manual.
• Power supply (220÷240) Volt AC 50/60 Hz.
• First PTC sensors group (alarm)
• Second PTC sensors group (pre alarm)
• External input signal
• Delayed external input signal
• Alarm off
• Alarm on
• Pre alarm off
• Pre alarm on
• Fault or power supply off (norm. open after about 2 sec.) Terminal 1,2
Recommended fuse (power side) 0.5 A.
Signal wire max 2.5 mm2, recommended 1.5 mm2.
On switch on the device, relays K2 and K3 immediately switch on, relay K1
switches some 2 seconds late and keeps available the input signal to terminal n.
2 through output to terminal n. 6.
These features allow to connect directly the release device to the alarm outputs
(terminal n. 3 and n. 5) without having undesired switching during the lighting
phase, in particular when the protection device is directly supplied by the machine
to protect (see example on TAB 1).
ASSEMBLY

POWER SUPPLY

ELECTRICAL CONNECTIONS

OPERATING DESCRIPTION
- 8 -
ENGLISH
Terminal 8,9
Terminal 10,12
Terminal 11,12
Terminal 2
Terminal 6
Terminal 6,3
Terminal 6,4
Terminal 6,5
Terminal 6,7