MODEL: RZMS-U9

RZMS-U9 SPECIFICATIONS

ES-7605 Rev.13 Page 3/12

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

INSTALLATION

Power consumption

•AC: Approx. 5 VA

•DC: Approx. 1.2 W

Operating temperature: -5 to +60°C (23 to 140°F)

Operating humidity: 30 to 90 %RH (non-condensing)

Mounting: Surface or DIN rail

Weight: 520 g (1.15 lb)

PERFORMANCE

Accuracy: See "Input type, Range, Accuracy & Temperature

Coefficient" section.

Cold junction compensation error: (°C)

≤ ±[0.6 +|Ambient Temp. – 25|× 0.04]

(in stable ambient temperature; e.g. ±1.0°C at 15°C and

35°C)

Applicable with balanced terminal temperature.

Error will increase by imbalances caused by direct mounting

of the REM3 to the terminals.

Temp. coefficient: See "Input type, Range, Accuracy &

Temperature Coefficient" section.

Response time (Assuming the fastest reading on Modbus)

•DC of ±1000 mV or narrower ranges or T/C:

≤ [Sampling Time + 0.3 sec.] (0 – 90 %)

•DC of ±3 V or wider ranges:

≤ [Sampling Time + 0.5 sec.] (0 – 90 %)

•RTD or potentiometer:

≤ [Sampling Time + 0.3 sec.] (0 – 90 %)

Insulation resistance: ≥ 100 MΩ with 500 V DC

Dielectric strength: 500 Vpeak @1 minute

(input 1 to input 2 to input 3 to input 4 to input 5 to input 6

to input 7 to input 8 to input 9 to input 10 to input 11 to

input 12 to trigger input to alarm output to RS-232-C or RS-

485 or configurator jack to power or FG)

2000 V AC @ 1 minute (power to FG)

Note: Peak value including both AC and DC (e.g. 354 V AC

with 0 V DC).

Though the withstand voltage is limited to 500 Vpeak

between the I/O (analog inputs, trigger input or alarm

output) and the power input, there will be no dielectric

breakdown between the I/O (with or without grounding) and

other terminals even when 2000 V AC is applied across FG

and the power input if the earth terminal is adequately

grounded.

Line noise normal mode rejection: ≥ 100 dB

Magnitude of the effects of normal mode 50/60 Hz noise,

with the most appropriate line noise filter frequency setting.

Each input circuit has a CR filter of sufficient large time

constant so that there will be little effect of line noise such

as 500 mV AC superposed on a thermocouple or ±60 mV

input.

Common mode noise rejection

Magnitude of the effects of voltages applied across the

terminal C and the ground terminal when there is no

potential difference among all the C terminals.

DC: N/A

AC, ±3 V, ±6 V, ±12 V: Approx. 86 dB

AC, other ranges: Approx. 120 dB

Common mode noise rejection between channels:

Magnitude of the effects of DC/50/60 Hz voltages applied

across the terminals C of the present and the last scanned

channels. (Data are scanned from ch 1 to ch 12 in turn and

back to ch 1 again.)

DC, ±3 V, ±6 V, ±12 V: Approx. 100 dB

DC, other ranges: Approx. 120 dB

AC, ±3 V, ±6 V, ±12 V: Approx. 86 dB

AC, other ranges: Approx. 106 dB

High common mode noise between channels may

compromise the accuracies in low millivolts measuring

including thermocouple input.

We recommend that C terminals of each channel be cross-

wired and then connected to the ground terminal to ensure

the measurement of the highest accuracy.

If such configuration is not possible, take special

consideration to minimize the channel-to-channel common

mode noise and the potential against the ground terminal.

The potential of the open terminal C against the ground

terminal equals to that of the last scanned channel. If ch 2

and ch 3 are not connected, the accuracy of ch 4

measurement is affected by potential difference between

the C terminals of ch 1 and ch 4.

STANDARDS & APPROVALS

EU conformity:

EMC Directive

EMI EN 61000-6-4

EMS EN 61000-6-2

Low Voltage Directive

EN 61010-1, EN 61010-2-201

Installation Category II

Pollution Degree 2

Power input to input or output: Reinforced insulation

(300 V)

RoHS Directive

EN 50581