Rockwell Automation 825 Smart Motor Manager User Manual - Manual (Page 80)

3-47 Functions
Publication 825-UM001B-EN-P January 2001
Table 3.Z Sensor Measuring Circuit Specifications
➊ Twisted lead: 25 times twisted per m
Screened lead: Screen connected to T2
Function
Factory setting Off
Sensor Measuring Circuit
Max. resistance of the PTC chain when cold 1.5 k
Ω
Max. number of sensors as per IEC 34-11-2 6
Pickup value at
δ
A
= –5…+60
°
C 3.3 k Ω ± 0.3 k Ω
Dropout value at δ
A
= –5…+60 ° C 1.8 k
Ω
± 0.3 k
Ω
Delay on pickup 800 ms ± 200 ms
Pickup value when short-circuit in sensors circuit
at
δ
A
= –5…+60 ° C
≤ 15 Ω
Measuring voltage as per IEC 34-11-2 < 2.5V DC
Measuring Lead
Minimum cross-section [mm
2
]
[AWG No.]
0.5
20
0.75
18
1.0
17
1.5
16
2.5
14
Maximum length [m]
[ft]
200
656 300
984 400
1 312
600
1 968
1 000
3 280
Method of installation ➊ up to 100 m (328 ft) twisted, unscreened