Wesley BC-620-4CA - Manual (Page 26)

22 Curtis 1234/36/38 Manual,
OS
11
2 — INSTALLATION & WIRING: I/O Signal Specifications
Communications ports
Separate CAN and serial ports provide complete communications and program-
ming capability for all user available controller information.
The Curtis 1311 handheld programmer plugs into a connector wired to
pins 28 and 29, along with ground (pin 7) and the +12V power supply (pin
25); see wiring diagram, Figure 3. The Curtis Model 840 display can plug into
the same 4-pin connector.
Wiring the CAN Term H and CAN Term L pins together provides a local
CAN termination of 120 Ω, 0.5 W; keep the length of these wires short. CAN
Term H and CAN Term L should never be connected to any external wiring.
COMMUNICATIONS PORT SPECIFICATIONS
SUPPORTED PROTECTED ESD
SIGNAL NAME PIN PROTOCOL
/
DEVICES DATA RATE VOLTAGE TOLERANCE
CANH 23 CANopen, up to 500 kbps Continuous= ± 8 kV (air
CANL 35 NODES 2.0, - 36 V to discharge)
other 11-bit (MaxV + 10 V)
identifier field Transient=
CAN protocols ± 200 V
CAN Term H 21 (no connection ± 8 kV (air
CAN Term L 34 to external wiring) discharge)
Serial TX 28 Curtis 840 Display, as required, -0.3 to 12 V ± 8 kV (air
Serial RX 29 1311 Handheld 9.6 to 56 kbps discharge)
Programmer,
1314 PC Program-
ming Station
Encoder inputs
Two control lines are internally configured to read a quadrature type position
encoder. The encoder is typically powered from the 5V supply (pin 26) or 12V
supply (pin 25), but can be powered from any external supply (from 5 V up
to B+) as long as the logic threshold requirements are met.
ENCODER INPUT SPECIFICATIONS
LOGIC INPUT MAX PROTECTED ESD
SIGNAL NAME PIN THRESHOLDS IMPEDANCE FREQ
.
VOLTAGE TOLERANCE
Encoder A 31 Rising edge= 720 Ω 10 kHz - 5 V to ± 8 kV (air
Encoder B 32 2.8 V max (internal (MaxV + 10 V) discharge)
Falling edge= pull-up
2.2 V min to +4V)