User manual
Document no. : 031221
Version : V3.3
MC 785-ECU
Client: Heinen & Hopman
Page: 3 of 12
1
Technical specifications
General
Type
: MC 785-ECU
Wall-mounting:
Housing
: Grey plastic
Material
: Polystyrol 454h KG 2 natur BASF
Dimensions
: 213 x 180 x 85mm (bhd)
Front
: Polycarbonate (IP-44)
Panel-mounting:
Housing
: Steel plate panel
Material
: Steel sprayed silver grey
Dimensions
: 217 x 155 x 85mm (bhd)
Panel cutout
: min. 208 x 146mm (bh)
Front
: Polycarbonate (IP-44)
Range
: -40/+50°C per 0.1°C
-500/+10.000 Pa per 1 Pa (settings thru parameters)
0/+100% per 1%
Power supply
: 230 Vac; 50/60 Hz (-10/+5%) or else see product sticker.
Power consumption
: 9 VA
Operation temperature
: -20/+50°C
Storage temperature
: -20/+60°C
Operation RH
: 10/+90 % RH non-condensing
Accuracy
: ± 0.5 % of the range
Front
Display
: 4-digit digital display for temperature readout
4-digit digital display for air pressure readout
4-digit digital display for setpoint readout
4-digit digital display for emission level readout
LEDs
: °C
= Set point on base of temperature
Pa
= Set point on base of air pressure
%
= Set point on base of percentages
AUTO
= Automatic control
MAN
= Manual control
Keys
: ON/OFF
= On/off key controller
T
= Control on base of temperature
P
= Control on base of air pressure
-
= Down key
+
= Up key
AUTO/MAN.
= Automatic/manual operation key
Inputs and outputs
Sensors
: Temperature sensor . . . . . . . . . . . . . . . . . . . . . . (10k NTC, 2-leader)
Pressure sensor input . . . . . . . . . . . . . . . . . . . . . (4/+20mA, 3-leader)
Analog output
: 0/+10 Vdc output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . (Rb = 10 k
)
Digital input
: Dig.in-1 External Fan function . . . . . . . . . . . . (NC1, closed = normal)
Dig.in-2 External AUTO-override . . . . . . (NC2, closed = auto mode)
Communication
: RS485 Network . . (A, B, GND 2xtwisted-pair shielded min. 0,5mm
2
)
Relay
: RY1 Alarm . . . . . . . . . . . . . . . (C/NO/NC, 250Vac/16A non-inductive)
C-NO is normally closed; C-NC is closed in case of alarm
RY2 On/Off (Freq.Contr. Direct) . (C/NO, 250Vac/16A non-inductive)
RY3 On/Off (Freq.Contr. Reverse) (C/NO, 250Vac/16A non-inductive)
