Limit Alarms

Programmable Alarms Analog Alarms  

Analog Alarms

Fail-safe and non-failsafe alarms are available from DIN-rail mount devices to front-of-panel displays offering up to four contact relays. These alarms feature digital setpoint controls, delay timers, and universal inputs. M-System alarm series are used from simple on/off pump control to back-up alarm systems in the event of a PLC/DCS failure.

Quick Comparsion ChartApplication Notes

Rotary Switch / Potentiometer / Various Setpoint Adjustments
AL-UNIT Series
Rotary switch adj., Direct Sensor Input, SPDT Alarm
AL-UNIT Series
Green
  • Input DC, T/C, RTD, Pot, Pulse, AC, 2-wire Transmitter
  • SPDT dual alarm
  • Output 120 Vac or 30 Vdc @1 A; 240 Vac @0.5 A
  • 100, 110, 115, 120, 200, 220, 240 Vac or 12, 24, 48 Vdc powered
Products Line up
A-UNIT Series
Potentiometer Adj., Direct Sensor Input, SPDT Alarm
A-UNIT Series
  • Input DC, T/C, RTD, Pot, Pulse, AC, 2-wire Transmitter
  • SPDT dual alarm
  • Output 120 Vac or 30 Vdc @1 A; 240 Vac @0.5 A
  • 100, 110, 115, 120, 200, 220, 240 Vac or 12, 24, 48 Vdc powered
Products Line up
M-PAC Series
Direct Sensor Input, Various SP Control Options, SPDT Alarm
M-PAC Series
  • Input DC, T/C, RTD, Pot, Pulse, AC, 2-wire Transmitter
  • SPDT single/dual alarm; latching or no
  • Output 120 Vac or 30 Vdc @3 A
  • 120, 240 Vac or 12, 24 Vdc powered
  • Pot, remote dial or remote 0-1 V input for setpoint control
  • Deadband adjustable over entire range (1-100%)
Products Line up
 
Potentiometer / Dial Adjustments
M2AVS
DC Input, Thumbwheel SW Adj., Single DPDT Alarm
M2AVS
CE Green
  • Input 4-20 mA, 0-10 V, 0-5 V, 1-5 Vdc
  • DPDT alarm; latching or no
  • Output 120 Vac or 30 Vdc @5 A; 240 Vac @2.5 A
  • 100-240 Vac or 24 Vdc powered.
Data Sheet Download (PDF)
KSE
DC Input, Dial Adj., Single or Dual SPDT Alarm
KSE
CE Green
  • Input 4-20 mA, 1-5 Vdc
  • SPDT single or dual alarm
  • Output 120 Vac or 30 Vdc @1 A; 240 Vac @0.5 A
  • 100-120 or 200-240 Vac powered
Data Sheet Download (PDF)
L4AS
DC Input, Single-turn screws or Dial Adj., Quad SPDT Alarm
L4AS
Green
  • Input 4-20 mA, 1-5 Vdc
  • SPDT quad or dual alarm
  • Output 120 Vac or 30 Vdc @1 A; 240 Vac @0.5 A
  • 85-132, 170-264 Vac or 24 Vdc powered
Data Sheet Download (PDF)
 
Thumbwheel Switch Adjustments
AE-UNIT Series
Direct Sensor Input, SPDT plus DC Transmitter Output
AE-UNIT Series
  • Input DC, T/C, RTD, Pot, Pulse, AC, 2-wire Transmitter
  • SPDT dual alarm
  • Output 120 Vac or 30 Vdc @1 A; 240 Vac @0.5 A
  • Specific DC output range within -10-+12 V or 0-20 mA
  • 100, 110, 115, 120, 200, 220, 240 Vac or 12, 24, 48 Vdc powered
Products Line up
ASD1
DC Input, Thumbwheel SW Adj., Dual SPDT Alarm
ASD1
CE UL cUL Green
  • Input 4-20 mA, 0-10 V, 0-5 V, 1-5 Vdc
  • SPDT dual alarm; latching or no
  • Output 120 Vac or 30 Vdc @5 A; 240 Vac @2.5 A
  • 100-120 or 200-240 Vac powered
Data Sheet Download (PDF)
KSED
DC Input, Thumbwheel SW Adj., Dual SPDT Alarm
KSED
CE UL cUL Green
  • Input 4-20 mA, 0-10 V, 0-5 V, 1-5 Vdc
  • SPDT dual alarm
  • Output 120 Vac or 30 Vdc @5 A; 240 Vac @2.5 A
  • 100-120 or 200-240 Vac powered
Data Sheet Download (PDF)
M2SED
DC Input, Thumbwheel SW Adj., Dual SPDT Alarm
M2SED
CE UL cUL Green
  • Input 4-20 mA, 0-10 V, 0-5 V, 1-5 Vdc
  • SPDT dual alarm
  • Output 120 Vac or 30 Vdc @5 A; 240 Vac @2.5 A
  • 100-240 Vac or 24 Vdc powered.
Data Sheet Download (PDF)
M2AS
DC Input, Thumbwheel SW Adj., Single DPDT Alarm
M2AS
CE Green
  • Input 4-20 mA, 0-10 V, 0-5 V, 1-5 Vdc
  • DPDT alarm; latching or no
  • Output 120 Vac or 30 Vdc @5 A; 240 Vac @2.5 A
  • 100-240 Vac or 24 Vdc powered.
Data Sheet Download (PDF)
M2AS1
DC Input, Thumbwheel SW Adj., Single SPDT Alarm
M2AS1
CE Green
  • Input 4-20 mA, 0-10 V, 0-5 V, 1-5 Vdc
  • SPDT alarm; latching or no
  • Output 120 Vac or 30 Vdc @5 A; 240 Vac @2.5 A
  • 100-240 Vac or 24 Vdc powered.
Data Sheet Download (PDF)
Deviation Alarm
AYDV
Two DC Input Deviation Alarm
AYDV
  • Input 1-5 V, 4-20 mA, 10-50 mA
  • SPDT dual alarm
  • Output 120 Vac or 30 Vdc @1 A; 240 Vac @0.5 A
  • 100, 110, 115, 120, 200, 220, 240 Vac or 12, 24, 48 Vdc powered
Data Sheet Download (PDF)
 
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M-System Products Guide