CDTX-90-2 Terminal Connections
Terminals 3 and 4: Loop Power
Max. loop impedance: 50 Ω max. @ 12 V 325 Ω max. @ 18 V 600 Ω max. @ 24 V
4 System Pwr
Loop -
System Pwr
3 Loop +
AUX
2 Power -
AUX
1 Power +
Terminals
Terminals
12is temperature input
13is the isolated signal ground
14is the sensor earth ground
10 Relay(NO) 2
9Relay 2 (COM)
8 | Relay 2 | 14 | Sensr Gnd |
(NC) | (SHIELD) | ||
7 | Relay 1 | 13 | Iso. Gnd |
(NO) | (BLACK) | ||
6 | Relay 1 | 12 | Temp. IN |
(COM) | (WHITE) | ||
5 | Relay 1 | 11 | Signal IN |
(NC) | (RED) |
Terminals 5-10: Relay Outputs
•Two SPDT mechanical relays, programmable as:
•High or Low setpoint with adjustable hysteresis.
•proportional Pulse (400 pulses per minute maximum).
•May be disabled (Off) if not used.
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Connection to a PLC with | ||||||||
Transmitter |
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| Power Supply |
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| DC 12 - 24 V |
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Terminals |
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Sys. Pwr. | 4 | - | Power |
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Sys. Pwr. | 4 | - | Loop Input | |||||
Loop - | Supply | |||||||
Sys. Pwr. | 3 | + | Power | Loop - | ||||
Sys. Pwr. | 3 | + | Loop Input | |||||
Loop + | Supply | |||||||
AUX | 2 |
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| AUX |
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Power - |
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AUX | 1 |
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Power + |
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| Power + |
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Connection to a PLC/Recorder, separate supply |
| Example: Two transmitters connected to PLC/Recorder | ||||||||||||||||||||||||
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| with separate power supply | |||||||
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| Transmitter 1 | |||||||||||||
| Transmitter |
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| DC 12 - 24 V |
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| Sys. Pwr. | 4 |
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| DC 12 - 24 V |
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| - | Power |
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| Supply |
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| Sys. Pwr. | 3 |
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| + | Power |
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| Loop + |
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| Supply |
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| Supply |
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| AUX | 2 |
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| PLC or Recorder |
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| Power + |
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Sys. Pwr. | 4 |
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| Loop Input |
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Loop - |
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| - | Channel 1 |
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Sys. Pwr. | 3 |
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Loop + |
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| Sys. Pwr. | 4 |
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| Loop - |
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AUX | 2 |
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| Sys. Pwr. | 3 |
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Power - |
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| Loop + |
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AUX | 1 |
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| Channel 2 |
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Power + |
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| Power - |
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| AUX | 1 |
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AUX required for all |
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| Power + |
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page 6