MODEL: JB2

JB2 SPECIFICATIONS

ES-2642 Rev.5 Page 1/5

http://www.m-system.co.jp/

Plug-in Signal Conditioners M-UNIT

ANALOG BACKUP STATION

Functions & Features

• Enables manual loading providing hold/increase/ decrease

signals to a device controlled by PID controller

• When the PID controller fails, the JB2 output goes back the

preset time period and holds the cascade control signal of

that moment (Retroactive function)

• Cascade control loop does not open even when the JB2

itself fails

• Manual control output transits smoothly to the cascade

control mode in the preset response time (Sliding-back

function)

• Isolated re-transmitted output

• Parameters set via hand-held programmer PU-2x

• Can be driven on battery power supply (35 V DC max.)

Typical Applications

• Backup hold/manual loading for the DCS or computer

control output failure

72

(2.83)

80

(3.15)

136

(5.35)

mm (inch)

MODEL: JB2–AAA–R1/A[1]

ORDERING INFORMATION

• Code number: JB2-AAA-R1/A[1]

Specify a code from below for [1].

(e.g. JB2-AAA-R1/A/Q)

• Use Ordering Information Sheet (No. ESU-2642) to specify

details of the backup operation mode.

Factory setting (table below) will be used if not otherwise

specified.

• Specify the specification for option code /Q

(e.g. /C01/S01)

Manual control mode

1

Man/cas transition response

0.00

Up/down response mode

0

Up/down response time

10.00

High/low alarm mode at cas control

0

Low alarm setpoint

-25.00

High alarm setpoint

125.00

Retroactive time period

0.0

Initial manual control value

0.00

Output after power recovery in

manual control mode

-25.00

Output value after power recovery

0

CAS INPUT

Current

A: 4 – 20 mA DC

MV OUTPUT

Current

A: 4 – 20 mA DC

RE-TRANSMITTED OUTPUT

Current

A: 4 – 20 mA DC (Load resistance 350 Ω max.)

POWER INPUT

DC Power

R1: 15 – 35 V DC

(Operational voltage range 15 – 35 V, ripple 10 %p-p max.)

OUTPUT SELECTABLE AFTER POWER RECOVERY

/A: With

[1] OPTIONS

blank: none

/Q: With options (specify the specification)

SPECIFICATIONS OF OPTION: Q (multiple selections)

COATING (For the detail, refer to M-System's web site.)

/C01: Silicone coating

/C02: Polyurethane coating

/C03: Rubber coating

TERMINAL SCREW MATERIAL

/S01: Stainless steel