January 2016, Rev. 1
CAM216/16 IOM
Doc. Number: ECM-402-0116
70
Section 11: Installation of Optional THUM Wireless Adapter
Installation of Optional THUM Wireless Adapter
5.
Using appropriate tools, verify that the internal pre-wired connections between
the MPA TBM and the CAM16 P1 connector are as shown below. If the wires are
disconnected on the TBM, connect them as shown:
Table 39.
MPA Pre-Wired Connections
CAM16
MPA
O-
20
O+
21
I-
22
I+
23
6.
Next, connect the THUM wires to the TBM as shown in the following table:
Table 40.
THUM Wires to TBM Configuration
MPA TBM
THUM
22
White
23
Yellow
26
Red
29
Black
7.
Verify that all connections are secured and make sure the actuator is configured for
“Network Mode” (Setpoint changes via THUM will not be accepted if not in proper
mode), and then close the actuator.
11.4
Component Installation on EHO
1.
Disconnect the actuator from the power source and open the back cover to expose
the STC.
2.
Apply Teflon tape to both, the THUM and the reducer bushing threads to
prevent galling.
3.
Insert the Wireless HART THUM and a 3/4 to 1/4 conduit reducer into one of the access
ports in the actuator control housing. Then, tighten securely, making sure not to
damage wires while turning.
NOTE:
Reducer bushings used for non-hazardous locations installation only.
4.
Once the THUM is securely installed, wire as shown below:
Table 41.
EHO and THUM Wiring Configuration
EHO STC
Connection
THUM
9
24 VDC
Red
10
0 VDC
Black 1200 OHM Series Resistor
24
Shield
Green (Optional)
43
HART (+)
Yellow
44
HART (-)
White
NOTE:
Resistors and other required parts are available by ordering Part No. 87263 “Wireless HART
THUM Kit”.
