Watlow Series 922 - Manual (Page 69)

Appendix
69
WATLOW Series 922 User's Manual
Specifications
Output - Control Per Channel (Single or Dual)
• Solid state relay, 0.5A @ 24VAC min. 264 VAC max., opto-isolated, zero
cross switching.
• Solid state switch, 20mA @ 20VDC max, open collector switch-to-ground.
• 4-20mA into 600
Ω
load maximum.
Output/Input - Auxiliary
• External, plug-in module.
• Solid state relays, 2 or 8 ea., 0.5A @ 24VAC min. 264 VAC max.
• Auxiliary supply: 21 to 33VDC, 25mA maximum.
• Switched DC signal provides a minimum turn on voltage of 3VDC in a
minimum 500
Ω
load. Maximum on voltage not greater than 32VDC into an
infinite load.
Output - Analog Retransmit
• Device driven must have an input impedance > 10k
Ω
.
• Reference: 0 Units = 0 Volts.
• Scalable: 1mV, 2mV, 5mV, or 10mV per LSD.
• Maximum voltage Span: -9.5 to +9.5 volts.
Accuracy
• Calibration Accuracy and Sensor Conformity:
±
0.15% of span,
±
1 digit at
77
°
F
±
5
°
F (25
°
C
±
3
°
C) ambient & rated line voltage
±
10%.
• Accuracy Span: 1000
°
F or 540
°
C minimum.
• Temperature Stability: 0.18
°
F/
°
F (0.1
°
C/
°
C) change in ambient.
• Voltage Stability:
±
0.01% of span / % of rated line voltage.
Communications
• Serial data communications.
• RS-422A or RS-423A (RS-232C compatible).
• Most operator indication and controls.
• ANSI X3.28 protocol, or XON/XOFF protocol.
• Isolated.
• DB-9 Female connector.
Terminals
• #6 compression type screw terminals.
Power
• 115/230VAC
±
10%, 50/60Hz
±
5%.
• 18VA maximum.
• Data retention upon power failure via nonvolatile memory.
Operating Environment
• 32 to 130
°
F/0 to 55
°
C.
• 0 to 90% RH, non-condensing.
Dimensions
• Height: 3.8 in. (96.52 mm)
• Width: 3.8 in. (96.52 mm)
• Overall depth: 7.0 in. (177.80 mm)
• Behind panel depth: 6.0 in. (152.50 mm)
with connector for
communication and events:
8.8 in. (223.52 mm)
• Weight: 2.8 lb (1.27 kg)