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MAS NTR 735 A
INSTALLATION MANUAL
Simple Automation Control Module (MAS)
ntr_735a_e_mas_installation_manual.doc 07/1999 - 3/8
2.3 Description of inputs
Description Description of AC inputs
Input voltage 100 - 240V AC, +10% -15%, 50/60 Hz
Input impedance ≥
800 k Ohms
Level 0
≤ 40V AC
Level 1 ≥
80V AC
Response time 25 ms min, 130 ms max.
Galvanic isolation No
Status indication LCD display
Description Description of DC inputs
Input voltage 24V DC +20% -15%
Current consumption 5 mA
Level 0
≤ 4V
Level 1
≥ 18V
Response time 15 ms
Galvanic isolation No
Status indication LCD display
Description Description of analogue inputs
MAS 10 RCD 6 Inputs: I 01 – I 06
MAS 20 RCD 8 Inputs: I 01 – I 08
Number of bits 8
Resolution (10000 / 250) mV
Conversion time 15 +/- 5ms
Input voltage 0 - 10V DC
Input impedance 150 k Ohms max.
Precision +/- 5%
Default Offset/ Gain Offset = 0
Gain = 1
These values can be changed by the program
Temp. dependent derating +/- 3 LSB on the authorised range
2.4 Description of relay outputs
Description Description of relay outputs
Max. operating voltage 250V AC, 30V DC
Max. operating current 8A / point
Minimum load 10mA at 5V DC
Response time ≤
10ms
Type of contact Gold-plated silver
Status indication LCD display
Category
of use
Max. operating
voltage
Power consumption
in steady state
Durability
(number of operations)
Max. ops /
hour
AC15 (electromagnet) 250V AC 450 VA 100000 600
DC13 (electromagnet)
(L/R = 150 ms) 30V DC 10 W 100000 360
AC14 (electromagnet) 250V AC 750 VA 100000 600
AC12 (resistive) 250V AC 2000 VA 100000 1800
DC12 (resistive) 30V DC 192 W 100000 1800