8
Specifications
8.1
Technical specifications
Input:
Link selectable
±
2mA,
±
20mA, 4 to 20mA,
±
100mV,
±
1V,
±
10V,
±
100V
or slidewire (3 wire 0–1kΩ to 0–1MΩ value slidewire)
Impedance:
135Ω (mA ranges), 1MΩ (Voltage ranges)
Accuracy:
0.1% of full scale
±
1 display digit for alarms and display when calibrated.
Sample rate:
7.5 samples per second
ADC Resolution:
1 in 20,000
Display update:
4 per second
Conversion Method:
Dual slope ADC
Microprocessor:
HC68HC11F CMOS
Ambient temperature:
-10 to 60
o
C
Humidity:
5 to 95% non condensing
Display:
LED 5 digit 7.6mm + alarm annunciator LEDs
Power supply:
AC 240V, 110V 32V or 24V 50/60Hz
or DC isolated wide range 12 to 48V.
Note: supply type is factory configured.
Power consumption:
AC supply 4 VA max, DC supply typically 100mA at 12VDC and
50mA at 24VDC for RM4 with no optional outputs
Output (standard):
2 x relay, Form A, rated 5A resistive. Programmable N.O. or N.C
8.2
Optional outputs
Third relay:
Rated 0.5A resistive 30VAC or DC
May be configured as form A or form C if the third relay
is the only option fitted
Fourth relay:
Rated 0.5A resistive 30VAC or DC, form A
Analog output:
Isolated 4 to 20mA, 0 to 1V or 0 to 10V link selectable
12 or 16 bit versions available
(4-20mA will drive into resistive loads of up to 800Ω)
First analog output can be configured for retransmission or PI control.
Serial communications: Isolated RS232, RS485 or RS422 (8 bit ASCII or Modbus RTU)
DC supply output:
Isolated and regulated 12VDC (50mA max) or
24VDC (25mA max)
Some combinations of optional outputs are available e.g. analog output plus extra relay.
Consult supplier for available combinations.
8.3
Physical characteristics
Case size:
44mm(w) x 91mm(h) x 141mm(d)
Connections:
Plug in screw terminals (max. 2.5mm
2
wire for
power and relays, max. 1.5mm
2
wire for load cell and options)
Weight:
470 gms basic model, 500 gms with option card
48 of
RM4IVMAN-2.1-0
Summary of Contents for RM4-IV
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