MODEL: M2AS
SCHEMATIC CIRCUITRY & CONNECTION DIAGRAM
Base Socket
4
Comparator
1
Low Drift
Amplifier
2
Converter
Converter
6
9
3
7
8
5
OUTPUT
OUTPUT
*
Input shunt resistor attached for current input.
9 9
THUMBWHEEL
SWITCHES
THUMBWHEEL
SWITCHES
9 9
N.C.
N.O.
COM
N.C.
N.O.
COM
+
–
*
INPUT
RESET
R
U(+)
V(–)
POWER
10
11
LOAD
Inductive
Load (Coil)
Varistor or CR Circuit
■
Relay Protection
• AC Powered
• DC Powered
LOAD
Inductive
Load (Coil)
Diode, Varistor or
CR Circuit
RESET
CONTROL
Ry
FUNCTIONS
■
HIGH ALARM
: When the signal input exceeds
the preset setpoint, the relay provides a tripped
condition.
• Hi Alarm
Input
t
Setpoint
Deadband
Bold Line
Thin Line
: Alarm Tripped
: Alarm Untripped
• Lo Alarm
Input
t
Setpoint
Deadband
Bold Line
Thin Line
: Alarm Tripped
: Alarm Untripped
Input
TD
T
<
TD
TD
t
Setpoint
Bold Line: Coil Energized
• ON Delay Time (TD) with Hi Alarm
• Power ON Delay Time (TDP) with Hi Alarm
Input
TDP
Power ON
t
Setpoint
Bold Line: Coil Energized
Deadband
Input
t
Setpoint
Reset Command
• Latching Output with Hi Alarm
■
LOW ALARM: When the signal input goes below
the preset setpoint, the relay provides a tripped
condition
■
ON DELAY TIME: The relay status does not change
until after the preset ON Delay Time (TD) once the
signal input goes across the threshold.
■
POWER ON DELAY TIME: The relay does not provide
a tripped condition for a duration of the preset Power
ON Delay Time (TDP) after the power supply is turned
on, even when the signal input is in an alarm range.
■
LATCHING OUTPUT: The relay does not return to an
untripped condition once the signal input goes across
the threshold, unless:
(1) the Reset control button is pressed,
(2) the Reset input terminal is closed, or
(3) the power supply is removed.
Rugghölzli 2
CH - 5453 Busslingen
Tel. +41 (0)56 222 38 18
Fax +41 (0)56 222 10 12
www.sentronic.com
Produkte, Support und Service
SENTRONIC
AG
