Alarm Relay Contacts - Michell Instruments XTP501 User Manual

XTP501 & XTC501 User's Manual
NOTE 1: Channel 1 is fixed range output over instrument range and Channel 2
is adjustable between 0–100%.
NOTE 2: The maximum loop load resistance for mA outputs is 550Ω.
NOTE 3: The mA outputs are powered with a 24V excitation voltage.
4.5.6

Alarm Relay Contacts

• Type : SPCO (NO, NC and C)
• Contact Rating, Max: 2 A, 250 V AC
• Hysteresis is 0,03%
• AL1 and AL2 can be configured as OFF, LOW or HIGH
• A low alarm switches on when % is below the set point and switches off
when % is above the set point + Hysteresis
• A high alarm switches on when % is above the set point and switches off
when % is below the set point – Hysteresis
• When the instrument is warming up (cell temperature not stabilized) both
relays are OFF
Michell Instruments
Pin Number Description
1 Alarm 2 NO
2 Alarm 1 NO
3 Alarm 1 Common
4 Alarm 1 NC
5 Alarm 2 NC
6 Alarm 2 Common
NOTE: The above view of the electrical
connections is shown from the mating side.
Here are the connections as viewed from the back of the
connector and this should be used for wiring purposes.
INSTALLATION
Colour
Red
Blue
Green
Yellow
White
Black
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