ABB ACS880 - PTC Thermistor Relays; Abb CM-Mss.41; Ordering Information; Power Supply A1-A2 (Non-Isolated)

56 Technical data
PTC thermistor relays
 ABB CM-MSS.41
Ordering information
Part number CM-MSS.41P (Push-in terminals):
1SVR740712R1200
CM-MSS.41S (Screw terminals): 1SVR730712R1200
Power supply A1-A2 (non-isolated)
Rated voltage 24…240 V AC/DC
Rated control supply voltage tolerance -15%…+10%
Rated frequency 15…400 Hz
Typical current/ power consumption 24 V AD/DC: 33 mA/ 0.55 VA
220-240 V AC: 11 mA/ 1.6 VA
Measuring circuit /Sensor circuit T1-T2
Sensor type PTC type A (DIN/EN 44081, DIN/EN 44082)
Number of sensor circuits 1
Max. total resistance with sensors in cold state in the
circuit
< 750 ohm
Overtemperature switch-off resistance
(relay de-energizes)
2.8 kohm ± 1%
Overtemperature switch-on resistance
(relay energizes)
1.1 kohm ± 1%
Short-circuit detection configurable
Short-circuit detection: switch-off resistance
(relay de-energizes)
< 12 ohm
Short-circuit detection: switch-on resistance
(relay energizes)
> 19 ohm
Interrupted wire detection: switch-off resistance
(relays de-energize)
dynamic
Interrupted wire detection: switch-on resistance
(relays energize)
not available
Non-volatile fault storage configurable
Test function Yes
Maximum voltage in sensor circuit 1.33 kOhm: 2.5 V
4 kOhm: 3.7 V
∞ kOhm: 5.5 V
Maximum current in sensor circuit 3.7 mA
Maximum sensor cable length
2 × 100 m with 0.75 mm
2
, 2 × 400 m with 2.5 mm
2
Accuracy within the rated control supply voltage
tolerance
0.50%
Accuracy within the temperature range 0.01% / K
Repeat accuracy (constant parameters) on request
Reaction time of the safety function <100 ms
Hardware fault tolerance (HFT) 0
Control circuit S1-T2
Control function Manual reset: yes
Auto reset: adjustable
Remote reset: adjustable
Maximum no-load voltage (S1-T2 open) 5.5 V
Maximum current (S1-T2 jumpered) 0.6 mA
Maximum cable length
2 × 100 m with 0.75 mm
2
, 2 × 400 m with 2.5 mm
2
00 ACS880 ATEX cabinet.book Page 56 Tuesday, May 28, 2019 10:25 AM