Watlow Series 945 High/Low Limit Control - Manual (Page 19)

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WATLOW Series 945 High/Low Limit User's Manual
Series 945 Model Number Information
The Series 945 Model Number, listed on your unit sticker, is defined below.
Control
Series 945 =
1/4 DIN, single input,
High/Low limit, dual alarms,
dual digital displays.
Input Type
1 = Type J, K, T, N, C, PT2 thermocouple
2 = Type J, K, T, N, C, PT 2 thermocouple,
RTD 1
°
, 4-20mA, 0-5VDC
3 = Type J, K, T, N, C, PT 2 thermocouple,
RTD 0.1
°
, 4-20mA, 0-5VDC
Alarm 1
Output 1 Type
C = Switched DC, (Open Collector), non-isolated
Alarm 2
Output 2 & 3 Type
2 = Dual, Mechanical Relay, 6A, Form A or B
Communications
A = None
B = Isolated RS-423/RS-422
D = EIA-485
Specifications
Communications
• Serial data communications.
• RS-422A or RS-423A (RS-232C compatible) or EIA-485.
• ANSI X3.28 protocol, or XON/XOFF protocol.
• Isolated.
• Data logging.
• #6 compression type screw terminals.
Power
• 120/240VAC + 10%, -15%, 50/60Hz,
±
5%.
• 16VA maximum.
• Data retention upon power failure via non volatile memory.
Operating Environment
• 32 to 149
°
F/0 to 65
°
C.
• 0 to 90% RH, non-condensing.
Dimensions
• Height:
3.8 in. 97 mm
• Width: 3.8 in. 97 mm
• Overall depth: 7.0 in. 178 mm
• Behind panel depth: 6.0 in. 153 mm
• Weight: 2.5 lb. max. 0.4 kg
0 0 9 4 0 5 A 2 A C A J 1 A P