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6 SPECIFICATIONS
6.1 Performance Specifications
*1 For details on the I/O conversion characteristics, refer to the following.
Page 325 I/O Conversion Characteristics
*2 A maximum resolution in the user range setting.
*3 Excluded when the wiring is influenced by noise.
*4 Accuracy in the ambient temperature when the offset/gain is set
*5 Accuracy per 1 temperature change
*6 Cycle with which the digital output value which is A/D-converted in the module is updated.
*7 Time until the analog input signal reaches the AD converter in the module
*8 SIL2 A/D conversion cycle setting can be changed. Set "SIL2 A/D conversion cycle setting". ( Page 274 SIL2 A/D Conversion
Function)
*9 Instantaneous voltage and current values that do not cause any damage to internal resistance of the module.
*10 The accuracy in a SIL2 analog input system is calculated by the following calculation formula.
Accuracy of double input discrepancy detection + Accuracy of the R60AD8-G (Main) + Accuracy of the R60AD8-G (Sub)
Set the accuracy of double input discrepancy detection using "Duplex input error range setting". For details, refer to the following.
Page 281 Double input discrepancy detection function
Example) The following example is a formula to calculate the accuracy in a SIL2 analog input system when a temperature change is 5
(from 25 to 30) and "Duplex input error range setting" is set to 0.5%.
Accuracy of double input discrepancy detection + Accuracy of the R60AD8-G (Main) + Accuracy of the R60AD8-G (Sub)
= (0.5%) + ((0.1%) + (0.0035%/ 5)) + ((0.1%) + (0.0035%/ 5))
= 0.735% (236 digit)
When the input power supply to the power supply module is turned on immediately after the power supply
module is powered off, the R60AD8-G may not start up. After the power supply module is powered off, wait at
least five seconds before turning on the input power supply to the power supply module.
Input response time
The input response time of the R60AD8-G is the time needed to apply a value to the safety device after the analog value is
input to the R60AD8-G, as defined by the following formula.
•SCmst + (S2cycin 2) + RMin + SRin + (nin 2)
*1 For details on the safety cycle time, refer to the following.
MELSEC iQ-R CPU Module User's Manual (Application)
*2 For details, refer to the following.
Page 225 Performance Specifications
*3 For details, refer to the following.
MELSEC iQ-R CC-Link IE Field Network User's Manual (Application)
*4 Calculation example of d:
When the transmission interval monitoring time is 24ms and safety cycle time is 10ms, the calculation formula is 24 2 = 12, and the
result is rounded up to 20, a multiple of 10.
*5 For details on the safety I/O HOLD time, refer to the following.
MELSEC iQ-R CPU Module User's Manual (Application)
Symbol Description
SCmst Safety cycle time of the master station (safety station)
*1
S2cycin Control cycle time of the R60AD8-G (Main)
*2
RMin Safety refresh monitoring time for the input connection of the master station (safety station)
*3
+ Safety I/O HOLD
time
*5
SRin Response time of the R60AD8-G (Main) (20ms)
nin RMin - (TMmstin 2) - TMrmtin + c
c TMrmtin - d (This value is effective only if a station set to Passive is the RJ71GF11-T2, or RJ72GF15-T2 to which
the R60AD8-G (Main) is mounted. In other cases, the value is 0.)
d The calculation result of TMrmtin 2, which is rounded up to a multiple of the safety cycle time (control cycle time
of the R60AD8-G (Main)).
*4
TMmstin Transmission interval monitoring time for the input connection of the master station (safety station)
*3
TMrmtin Transmission interval monitoring time of the R60AD8-G (Main)
*2
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