Standards Specifications (3)

Name                                       Output isolator card            Output isolator card     Control output isolator

card

Model                                                   EH0                                        EA0                                    EC0

Input signal                                                                  1 to 5 V DC                             1 to 5 V DC                      4 to 20 mA DC

Input resistance                                                                     1 MΩ (100 kΩ when power off)                       250 Ω or equivalent at

20 mA input

External resistance of input                                               –-                                             –-                               Reference (*1)

Output signal                                                          1 to 5 V DC, 1 point                                 4 to 20 mA DC, 1 point

Output resistance                                                           Up to 1 Ω                                               500 kΩ or more

Output load resistance                                               2 kΩ or more                                               Up to 750 Ω

Allowable input voltage                                                                        _30 V DC                                          Allowable input current:

40 mA DC

Signal isolation                                                      Isolated between output and input signals, and output signal and power input

Mounting method                                                          Mounted in special nests (connected via backboard and connector)

Wiring                                                               External wiring: Connected to M4 screw terminals for input/output of special nests I/O

cards: Special cable (connector cable)

External dimensions                                                             73 (Width)x24 (Height)x115 (Depth) mm (including knob)

Weight                                                                                                                            70 g

Accuracy rating                                                    Within _0.1 % of span          Within _0.1 % of span      Within _0.2 % of span

Isolation resistance                                         Between input and output signals, input signal and power input: at 500 V DC, 100 MΩ

Between output signal and power input: at 500 V DC, 100 MΩ

Withstanding voltage                                     Between input and output signals, input signal and power input: 1500 V AC for 1 minute

Between output signal and power input: 500 V AC for 1 minute

Power supply                                                                                                        24 V DC _10 %

Maximum current consumption (24 V DC)                    50 mA                                      85 mA                                 60 mA

Ambient conditions                                                                          0 to 50 _C /5 to 95 % RH (non-condensing)

Effect of ambient temperature change                                                Max. _0.2 % of span for 10 _C change

Effect of power supply voltage change                                    Max. _0.1 % of span for change of 24 V DC _10 %

*1:  Allowable external input residence ≤ Allowable load resistance of current signal –250 (Ω).

OUTLINE

Signal Conditioner Cards, which interface to the process, are installed in Signal Conditioner Nests.

The signal conditioner cards can convert the I/O signals, isolate the I/O signals, and provide an isolated power supply from a built-in distributor.

For example, the measuring ranges of temperature and mV input signal conditioner cards can be changed by a portable BRAIN terminal. Some cards have communication functions and supply power to BRAIN Series transmitters (BRAIN UNI∆, BRAIN ADMAG and BRAIN YEWFLO).

You can select from 16 types of cards according to the kind of field signal.

l Signal Conditioner Cards

Style Code                                                               Description

ET5  *C                     Thermocouple input card

ER5  *C                     Resistance thermometer sensor input card

ES1  *C                     Potentiometer input card

EM1  *C                     mV input card

EH1  *A                     Input isolator card (1 to 5V)

EH5  *C                     Input isolator card (1 to 5V with square root)

EA1  *A                      2-wire transmitter input card

Model                   EA2  *A                     2-wire transmitter input card (used with BRAIN series)

EA5  *C                     2-wire transmitter input card (with square root)

EP1  *A                      Pulse train input card

EP3  *A                      Frequency input card

EC0  *A                     Control output isolator card

EA0  *A                      Output isolator card (4 to 20 mA)

EH0  *A                     Output isolator card (1 to 5V)

EX1  *A                      I/O through card

/BU  Upscale burnout (*1)

Suffix Codes       /BD  Downscale burnout (*1)

/DF  Fahrenheit display function (*2)

*1:  Applied to ET5, ER5, ES1, and EM1.  Can be changed using BRAIN terminals.

*2:   Applied to ET5 and ER5. If “/DF” is not specified, temperature in Fahrenheit can not be indicated.