|
| indicator |
Group A trip indicator - | Power ON and OFF | indicator |
Group A trip temperature set switches | Sensor disconnection | |
| ||
Group B trip indicator | or burnout indicator | |
|
| |
Group B trip temperature set | Temperature indicator set switch | |
Group C trip indicator |
|
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Group C trip temperature set switches- I | Manual reset switch | |
Temperature set point mode | RTD selection switches | |
Reset mode selection switch | ||
selection switches | (manual or automatic) | |
The Model RTM20 temperature control relay has eight different channels, each of which is devoted to a separate RTD. There are two ways, or modes, of using the eight channels . In mode 1, six channels (RTD's) can be set at one trip temperature and the other two
can be set at another trip temperature . In mode 2, three channels can be set at one trip temperature, two at a second trip temperature and three at a third trip temperature. In each mode, eight different places can be monitored.
Table 1 Trip Temperature Channels
Channel | 1 | 2 T | 3T4 | 5 | 6 | 7 | 8 |
Mode |
| ||||||
|
|
| Trip temp. | ||||
1 |
| Trip temperature A |
|
| |||
|
|
| B |
| |||
|
|
|
|
|
|
| |
2 |
| Trip temp. | Trip temp. |
| Trip temp. |
| |
|
| A | B |
|
| C |
|
