10 - 6
IM 4H3B1-01E
Alarm Indication When ALARM ACK-key is Pressed:
Non-Hold type:
Alarm display is not affected when the
ALARM ACK
-key is
pressed.
Hold type:
When alarm occurs, alarm indicator will start flashing. After
pressing the
ALARM ACK
-key, the indicator will show the status
of the alarm.
PERFORMANCE and CHARACTERISTICS
Input Resistance:
more than 10M
Ω
(TC, 20mV, 60mV, 200mV, 2V range)
approx. 1M
Ω
(6, 20V range).
Input Source Resistance: DCV, TC input: less than 2k
Ω
RTD input: less than 10
Ω
/wire. (Resistance is balanced between 3 wires)
Input Bias Current:
less than 10nA (however, when burnout is specified for TC: 100nA).
Maximum Common Mode Voltage:
250VAC rms (50/60Hz)
Maximum Differential Noise Between Channels (50, 60Hz):
250VAC rms
Interference Between Channels:
120dB (Rg = 500
Ω
, the deviation in case 30V is applied to another channel)
Common Mode Rejection Ratio:
120dB (50/60Hz
±
0.1%, 500
Ω
imbalance between terminal and ground)
Normal Mode Rejection Ratio:
40dB (50/60Hz
±
0.1%)
Insulation Resistance:
each terminal to ground terminal: more than 20M
Ω
(measured at 500VDC).
Dielectric Strength:
power supply to ground terminal:
1500VAC(50/60Hz), 1 min
contact output terminal to ground:
1500VAC(50/60Hz), 1 min
measuring input terminal to ground:
1000VAC(50/60Hz), 1 min
between measuring input terminals:
1000VAC(50/60Hz), 1 min
(except for RTD)
REMOTE terminal to ground:
500VAC, 1mm
Hold type:
Alarm ON
Alarm OFF
Indicator BLINK
Indicator ON
Indicator OFF
‘ACK’
‘ACK’
or
No action will occur when -key is pressed.
ALM indicator depends on alarm status.
Non-Hold type:
ACK
–