ES-5488 Rev.9

M8SED

Dual Output Super-mini Signal Conditioners Pico-M Series

DC ALARM

(thumbwheel switch adjustment)
Functions & Features
• Providing relay outputs at preset DC input levels
• Dual (Hi/Lo) trip
• Thumbwheel switch setpoint adjustments
• Space-saving, easy-to-maintain, multi-channel installation base

MODEL: M8SED-[1][2][3]-R[4]

ORDERING INFORMATION

• Code number: M8SED-[1][2][3]-R[4]
Specify a code from below for each of [1] through [4].
  (e.g. M8SED-A12-R/Q)
• Specify the specification for option code /Q
  (e.g. /C01 )

[1] INPUT

Current
A: 4 – 20 mA DC (Input resistance 250 Ω)
Voltage
4: 0 – 10 V DC (Input resistance 1 MΩ min.)
5: 0 – 5 V DC (Input resistance 1 MΩ min.)
6: 1 – 5 V DC (Input resistance 1 MΩ min.)

[2] OUTPUT 1

1: Hi trip (ON = tripped; OFF = untripped or no power)
2: Hi trip (OFF = tripped; ON = untripped or no power)

[3] OUTPUT2

1: Lo trip (ON = tripped; OFF = untripped or no power)
2: Lo trip (OFF = tripped; ON = untripped or no power)

POWER INPUT

DC Power
R: 24 V DC
(Operational voltage range 24 V ±10 %, ripple 10 %p-p max.)

[4] OPTIONS

blank: none
/Q: With options (specify the specification)

SPECIFICATIONS OF OPTION: Q

COATING (For the detail, refer to our web site.)
/C01: Silicone coating
/C02: Polyurethane coating
/C03: Rubber coating

RELATED PRODUCTS

• Installation Base or Single Mount Base Socket (model: M8BSx)
This unit must be mounted on dedicated base or socket except Model M8BS2 base.

GENERAL SPECIFICATIONS

Construction: Plug-in
Mounting screw: M3 screw (torque 0.3 N·m)
Housing material: Flame-resistant resin (black)
Power supply: Via the Installation Base terminals
(model: M8BSx)
Isolation: Input to output 1 to output 2 to power
Setpoint adjustments: Thumbwheel switches (front);
0 – 99 % independently; 1 % increments;
(factory setting: 50 %)
Hysteresis (deadband): Approx. 1 %
Front LEDs: Red LED turns on when the coil for Hi output is energized.
Green LED turns on when the coil for Lo output is energized.
Power ON timer: Relays de-energized for approx. 2 seconds after power is turned on.

INPUT SPECIFICATIONS

DC Current: Input resistor incorporated

OUTPUT SPECIFICATIONS

Relay Contact: 125 V AC @0.2 A (cos ø = 1) *
30 V DC @0.5 A (resistive load) *
Maximum switching voltage: 125 V AC or 60 V DC
Maximum switching power: 25 VA or 15 W
Minimum load: 100 mV DC @100 μA
Mechanical life: 5 × 106 cycles
* When used with a multi-channel installation base (e.g. M8BS-16), the ratings derated as following.
Terminal block type: 125 V AC @0.2 A, 30 V DC @0.25 A
Cable connector type: 24 V AC @50 mA, 24 V DC @50mA
 

INSTALLATION

Current consumption: Approx. 60 mA
Operating temperature: 0 to 55°C (32 to 131°F)
Operating humidity: 30 to 95 %RH (non-condensing)
Mounting: Installation Base (model: M8BSx)
Weight: 70 g (2.5 oz)

PERFORMANCE in percentage of span

Setpoint accuracy: ±0.5 %
Trip point repeatability: ±0.05 %
Temp. coefficient: ±0.02 %/°C (±0.01 %/°F)
Response time: ≤ 0.7 sec. (0 – 100 % at 90 % setpoint)
Line voltage effect: ±0.1 % over voltage range
Insulation resistance: ≥ 100 MΩ with 500 V DC
Dielectric strength: 1500 V AC @1 minute (input to output 1 to output 2 to power to ground)
SWC test: ANSI/IEEE-C37.90.1-1989

FRONT VIEW

EXTERNAL DIMENSIONS unit: mm [inch]

SCHEMATIC CIRCUITRY & CONNECTION DIAGRAM