Sequence of Events

The DeltaV system supports the Sequence of Events card and the Series 2 Sequence of Events card in Simplex mode.

Installation Notes

The 32-channel terminal block is recommended to provide screw terminations for field wiring for the Sequence of Events card and the Series 2 Sequence of Events card in Simplex mode. The 40-pin mass termination block also can be used. The following table lists the cable pin out connections for the Sequence of Events card

Table: 32-Channel Terminal Block used with Sequence of Events
Terminal	Channel Nomenclature	Terminal	Channel Nomenclature
Terminal 1	Channel 1+	Terminal 17	Channel 9+
Terminal 2	Channel 1-	Terminal 18	Channel 9-
Terminal 3	Channel 2+	Terminal 19	Channel 10+
Terminal 4	Channel 2-	Terminal 20	Channel 10-
Terminal 5	Channel 3+	Terminal 21	Channel 11+
Terminal 6	Channel 3-	Terminal 22	Channel 11-
Terminal 7	Channel 4+	Terminal 23	Channel 12+
Terminal 8	Channel 4-	Terminal 24	Channel 12-
Terminal 9	Channel 5+	Terminal 25	Channel 13+
Terminal 10	Channel 5-	Terminal 26	Channel 13-
Terminal 11	Channel 6+	Terminal 27	Channel 14+
Terminal 12	Channel 6-	Terminal 28	Channel 14-
Terminal 13	Channel 7+	Terminal 29	Channel 15+
Terminal 14	Channel 7-	Terminal 30	Channel 15-
Terminal 15	Channel 8+	Terminal 31	Channel 16+
Terminal 16	Channel 8-	Terminal 32	Channel 16-

A Network Time Server is required for a Sequence of Events card.

Specifications

Table: Sequence of Events Specifications
Item	Specification
Number of channels	16; each channel can be configured for SOE or DI operation.
Scan rate	0.25 msec for all 16 channels
Time stamp accuracy (for SOE channels only)	0.25 msec on a card; 1 msec in a controller. Accuracy with reference to system clock time after a 4 msec debounce filter has been applied.
Isolation	Each channel is optically isolated from the system and factory tested to 1500 VDC.
Detection level for ON	> 2 mA
Detection level for OFF	< 0.25 mA
Impedance	5K Ω
LocalBus current (12VDC nominal), per card	50 mA typical 75 mA maximum Series 2 75 mA typical 100 mA maximum
Field circuit power, per card	75 mA at 24 VDC (±10%) Series 2: 75 mA at 24 VDC (±20%)
Mounting	Assigned slot of I/O carrier

Wiring Diagram

Figure: Wiring Diagram for Sequence of Events