PendoTECH PressureMAT PMAT1, Руководство пользователя, Страница: 5 / 29

PressureMAT User Guide
Revision 1
Page 5/29
The process pressure is displayed on the LCD display for each input channel. High and low alarm
pressure set points are entered on the keypad for each channel and if the process pressure goes below
the low setting or above the high setting, the system will go into alarm state. The alarm function
includes activation of the dry contact relay output, a flashing “ALARM>” indication on LCD on the
same line as the pressure input channel in the alarm state, and an audible tone for 30 seconds. When
an alarm condition goes away, all indicators automatically go back to normal (unless the optional
alarm latching function is turned on which requires STOP to be pressure to clear the alarm). The
alarm functions are always active for all channels.
1.2. Control System Details
1.2.1. Hardware Details
There is no power switch so the system cannot be accidentally turned off. When the wall power
supply is connected to the system and plugged into a wall outlet, the system will turn ON. Instructions
to power down the system without unplugging are in Section 1.2.3. The Front and Back Panels details
are as shown:
FRONT PANEL:
Note: If a pressure sensor is not connected or is disconnected during operation of the system,
the pressure will go to a value greater than 75psi/5.17 bar and an alarm condition will occur.
Associated relays will switch and the analog output will send 20mA.
LCD BACKLIT
DISPLAY
KEYPAD