ControlMaster CM10, CM30 and CM50
Universal process controllers,
1
/8,
1
/4 and
1
/2 DIN 4 Installation
IM/CM/S–EN Rev. R 19
Fig. 4.11 ControlMaster CM30 and CM50 Optional Analog Inputs (3 and 4)
* Using internal transmitter power supply.
** Fit the CJ sensor supplied if Analog Inputs 3 or 4 are THC inputs.
(Alternatively, it is possible to use an external fixed cold [reference] junction, if the controller is programmed
for use with millivolt inputs and the appropriate thermocouple linearizer is selected.)
*** Analog Input 4 can be used only with THC inputs if Analog Input 3 is also used as a THC input.
**** For mA input types, to ensure loop continuity when the controller is switched off, fit a 2V7 Zener diode as shown.
Note. 3 Leads must have equal resistance, not exceeding 20 each.
Milliamps*
THC
CJ**
THC***
3-lead RTD
2-lead RTD
+ Resistance
RTD +
RTD –
RTD +
RTD –
Transmitter PSU
Analog
Input 4
Analog
Input 3
Milliamps*
RTD –
3rd lead
CM30 CM50
CJ Sensor
****
****
mA
mV
V
Digital Input
mA, mV, V,
Digital Input
To Next Page
Loading...
Need help?
General
