Zetron Model 1732 Remote Terminal Units (RTU) are the next generation SCADA/Telemetry system from Zetron. The M1732 is a cost-effective solution for applications that need to connect widely distributed remote sites to a central control program using radio, telephone or wireline communications media.
The M1732 interfaces easily with a wide variety of field equipment at the remote sites including inputs from analog and digital sensors as well as outputs to control devices such as contact switches and set-point controllers. System integrators can configure the M1732 to initiate alarm-on-exception reports to the central host controller, execute complex control algorithms based on sensor inputs, and store measurement data for later recall.
The M1732 offers a full range of process interface capability for both analog and digital signals or �points� including analog inputs, analog outputs, digital contact inputs and outputs and relay outputs. All of the I/O signal conditioning cards are modular so that the RTU can be easily sized to meet system requirements.
The Analog Input Module measures +/-10
VDC or 4-20 mA signals with a high-accuracy 12 bit A/D. It can also
be configured to function as an accumulator.
The M1732 typically operates with conventional or trunked radio systems, direct audio leased lines, or microwave to communicate with a Model 1730 System Controller for both periodic polling and alarm-on-exception reporting. In addition, the M1732 can be configured to report directly to the central control system over spread spectrum radio, cellular or conventional telephone. The M1730 supports most third party control systems using MODBUS protocol.
|Temperature||0 to 50 degrees C|
|Humidity||0 to 95% non-condensing|
|Watchdog timer and power monitoring for failsafe operation|
|LED indicator of unit status|
|Battery backed||Accuracy to +55 PPM at 30C,|
|Real Time Clock||+ 120 PPM from -10 to 70C|
|Zetron Case||For up to 4 expansion modules Approx. 7.5"x12"x7"|
|Medium NEMA* Case||For up to 13 expansion modules 14" x 16" by 6"|
|Large NEMA* Case||For up to 28 expansion modules 20" x 24" by 8"|
|*NEMA units are NOT included and must be purchased separately.|
|Standard||16VDC 2A max, 120VAC input|
|Battery Charger Module||7Ah sealed Gel Cell battery|
|Core Module||250 mA max, 200 mA typical|
|Radio Interface Module||100 mA max, 40 mA typical|
|Phone Modem Module||100 mA max, 50 mA typical|
|Analog Input Module||50 mA max , 30 mA typical|
|Analog Output Module||50 mA max, 20 mA typical|
|Digital I/O Module||50 mA max, 20 mA typical|
|Relay Output Module||200 mA max, 20 mA typical|
� Maximum voice power output to PSTN, -10 dBm
� Maximum DTMF power output to PSTN, -1 dBm
|DTMF signal||100 msec on/100 msec off|
|Zetron Radio Interface|
|Input levels||50 mV to 5 Vpp, Adjustable with two gain ranges|
|Input impedance||> 50 kohms at 1 KHz|
|Output level||50 mV to 5 Vpp,
Adjustable with two
|Output impedance||< 700 ohm at 1 KHz|
|� Flat audio
in and flat audio out
� COR adjustable0.1 to 4.5VDC
PTT output relay to ground < 300 mA max, normally open or closed position
|Spread Spectrum Radio|
|Frequency Range||902 to 928 MHz|
|Modulation Type||Spread spectrum GFSK|
|Spreading method||Frequency hopping|
|RF Power Output||Up to 1watt|
|Data Rate||1200 bps to 115.2 kbps|
One RS-232 channel with full handshake (RTS, CTS, and
DTR, RI). Speeds to 9600 bps.
|I/O MODULE SPECIFICATIONS|
configures I/O modules to meet the needs of each
application. The M1732 can include up to 16 modules.
|Digital I/O Module||16 digital inputs/outputs per module|
outputs - open collector 50VDC max, 100 mA Max.
Digital Inputs referenced to ground, Weak pull-ups provided (to +12V).
Contact closure to ground or 0-5V Voltage change.
|Logic Low||<600 ohms or < 1.0VDC|
|Logic High||>2.5 kohms or >2.0VDC|
|Protected to||+50VDC through 1 kohm|
Six Relay outputs per module
|Form C contacts||120VAC 1A, 24VDC 2A|
|Analog Output Module|
outputs per module
8 bit DAC, single ended referenced to ground 0-5V or 4-20 mA
|Voltage output accuracy||+0.5% of values +40 mV at zero to 50 degrees C|
� Max load 800 ohms +3.75% of value +0.16 mA
� Zero to 50 degrees C
|Analog Input Module|
Inputs per module, single ended, referenced to ground
12 bit resolution
|Voltage Range||+10 V|
(-20 to 50 degrees C)
|+0.7% of reading + 40 mV|
|Linearity||+10 mV or +2 counts|
|FCC Part 15
for Electromagnetic Interference (EMI) and Part 68 for Telephony
WISCO International, Inc. -
MIAMI, FL U.S.A.
Fax: E-mail: firstname.lastname@example.org