Note:
If the relays operate external contactors, these
must be fitted with RC snubber circuits to
manufacturer specifications to prevent
excessive switch-off voltage peaks.
OUT3, 4 AS UNIVERSAL OUTPUT
Galvanically isolated from the inputs.
Freely scalable resolution:
11 bits
Current output
0/4...20 mA configurable.
Signal range:
0...approx.22mA
Max. load:
≤
500
Ω
Load effect:
no effect
Resolution:
≤
22
µ
A (0,1%)
Accuracy
≤
40
µ
A (0,2%)
Voltage output
0/2...10V configurable
Signal range:
0...11 V
Min. load:
≥
2 k
Ω
Load effect:
no effect
Resolution:
≤
11 mV (0,1%)
Accuracy
≤
20 mV (0,2%)
OUT3, 4 used as transmitter supply
Output power:
22 mA /
≥
13 V
OUT3, 4 used as logic output
Load
≤
500
Ω
0/
≤
20 mA
Load > 500
Ω
0/> 13 V
OUTPUTS OUT5/6 (OPTION)
Galvanically isolated opto-coupler outputs.
Grounded load: common positive voltage.
Output rating: 18...32 VDC;
≤
70 mA
Internal voltage drop:
≤
1 V with I
max
Protective circuit: built-in against short circuit,
overload, reversed polarity (free-wheel diode
for relay loads).
POWER SUPPLY
Dependent of order:
AC SUPPLY
Voltage:
90...260 V AC
Frequency:
48...62 Hz
Power consumption approx. 7,0 VA
UNIVERSAL SUPPLY 24 V UC
AC voltage:
20,4...26,4 V AC
Frequency:
48...62 Hz
DC voltage:
18...31 V DC
Power consumption:
approx.. 7,0 VA
BEHAVIOUR WITH POWER FAILURE
Configuration, parameters and adjusted
set-points, control mode:
Non-volatile storage in EEPROM
BLUEPORT FRONT INTERFACE
Connection of PC via PC adapter (see
"Accessory equipment"). The BlueControl
software is used to configure, set parameters
and operate the MIR-491.
BUS INTERFACE (OPTION)
Galvanically isolated
Physical:
RS 422/485
Protocol:
Modbus RTU
Transmission speed: 2400, 4800, 9600, 19.200
bits/sec
Address range:
1...247
Number of controllers per bus: 32
Repeaters must be used to connect a higher number
of controllers.
ENVIRONMENTAL CONDITIONS
Protection modes
Front panel:
IP 65 (NEMA 4X)
Housing:
IP 20
Terminals:
IP 00
Technical data
Operating manual MIR-491
65
